Steel Circumvention Crackdown Expands as Section 232 Auto Parts Window Opens — Importers Face Multi-Front Compliance Surge

Daily Trade Intelligence for Importers & E-Commerce
2026-03-31 · Edition #5 · ← Back to latest
Executive Summary:

A wave of circumvention findings targeting steel products from Mexico, China, and Vietnam converges with the opening of the Section 232 auto parts inclusions window, creating an unprecedented compliance burden for importers across multiple sectors. With the Import Price Index rising to 144.0 and PPI Manufacturing jumping to 257.340, cost pressures are intensifying just as new duties and investigations threaten to raise landed costs further.

Executive Summary

This week's single biggest money-at-risk development is the convergence of three steel circumvention actions targeting Mexico, China, and Vietnam (FR Docs 2026-05809, 2026-05808, 2026-05807). Combined, these actions affect an estimated $4.2 billion in annual imports of corrosion-resistant steel products and welded wire mesh, with duties now applying immediately to products that previously entered the U.S. duty-free through third-country processing. For importers who have been sourcing through these channels, the financial exposure is severe and the compliance clock is already ticking.

Simultaneously, the Bureau of Industry and Security has opened the April 2026 Section 232 automobile parts inclusions window (FR Doc 2026-05681), signaling the next phase of tariff expansion into the automotive supply chain. Any company importing auto parts should be preparing submissions or monitoring which parts competitors are seeking to include — because once a part is added to the Section 232 scope, 25% duties apply with no phase-in period. This comes alongside a massive batch of AD/CVD administrative review initiations (FR Doc 2026-06127) covering dozens of product categories with February anniversary dates.

On the macro front, the numbers tell a story of mounting cost pressure with a strengthening dollar providing only partial relief. The Import Price Index rose to 144.0 in February 2026 (up 1.3% month-over-month), PPI Manufacturing surged to 257.340 (up 1.6% MoM), and the Trade Weighted Dollar Index climbed to 120.89 — its highest level since mid-March. The trade deficit narrowed significantly to -$54.5 billion in January from -$72.9 billion in December, but this may reflect front-loading dynamics rather than structural improvement.

This week, you should: (1) Audit your steel supply chains immediately if sourcing welded wire mesh from Mexico or corrosion-resistant steel through Vietnam or Indonesia — circumvention duties apply now; (2) Review your auto parts import portfolio against the Section 232 inclusions process and prepare defensive submissions by the April window deadline; (3) Check if any of your products are covered by the February-anniversary AD/CVD administrative reviews just initiated; (4) Update landed cost models to reflect the 1.3% import price increase and 1.6% PPI jump.

The Week In Numbers

MetricCurrent ValuePreviousChangeSignal

|---|---|---|---|---|

Import Price Index144.0 (Feb 2026)142.2 (Jan 2026)+1.26%Rising
PPI: Manufacturing257.340 (Feb 2026)253.407 (Jan 2026)+1.55%Alert
Consumer Price Index327.460 (Feb 2026)326.588 (Jan 2026)+0.27%Rising
Trade Weighted Dollar120.885 (Mar 27)120.389 (Mar 26)+0.41%Rising
Trade Balance (Goods & Services)-$54.5B (Jan 2026)-$72.9B (Dec 2025)+25.3%Improving
Imports (Quarterly, Ann.)$4,134.3B (Q4 2025)$4,167.3B (Q2 2025)-0.79%Stable
Exports (Quarterly, Ann.)$3,350.6B (Q4 2025)$3,366.9B (Q3 2025)-0.48%Falling
New AD/CVD Orders Issued2 this weekAlert
New ITC Investigations3 this weekAlert
Circumvention Findings3 this weekCRITICAL

Key macro takeaway: The Import Price Index has now risen for three consecutive months, climbing from 141.4 in December 2025 to 144.0 in February 2026 — a cumulative 1.84% increase that is flowing directly into higher landed costs. Meanwhile, PPI Manufacturing's 1.55% monthly jump to 257.340 represents the largest single-month increase since the tariff surge of early 2025, when the index spiked in response to the initial wave of Section 301 actions. The Trade Weighted Dollar's climb to 120.89 provides some import cost offset, but not nearly enough to neutralize the price pressure. The 3-month trend on the dollar is modestly upward (from ~119.8 in mid-March to 120.9), suggesting roughly 0.8% of currency tailwind against what is effectively 2-3% of headwind from rising input costs.

The trade deficit's sharp narrowing from -$72.9B to -$54.5B looks dramatic but should be interpreted cautiously — it follows a period of extreme front-loading in Q1 2025 (the deficit hit -$135.9B in March 2025) when importers rushed to beat anticipated tariff increases. The current narrowing likely reflects normalization of inventory levels rather than a structural shift in trade flows.

Key Signals This Week

Signal 1: Steel Welded Wire Mesh from Mexico — Final Circumvention Finding

  • What happened: Commerce issued a final affirmative determination of circumvention finding that certain low-carbon steel wire produced in Mexico and assembled into standard steel welded wire mesh in the United States is circumventing AD/CVD orders (FR Doc 2026-05809). This is a completed action — duties now apply.
  • Who is affected: Importers of welded wire mesh (HS 7314.20, 7314.39, 7314.49) sourcing from Mexico, particularly those in construction, agriculture, and concrete reinforcement. Any company importing Mexican-origin LCS wire for domestic assembly into mesh is directly impacted.
  • Estimated financial impact: Welded wire mesh from Mexico represents approximately $380-450 million in annual trade. AD/CVD duty rates on the underlying Chinese-origin steel can reach 60-120%, meaning importers face potential cost increases of $230-540 million across the sector.
  • Recommended action: Immediately audit your supply chain — contact your Mexican wire mesh supplier and demand documentation of steel origin. If they cannot demonstrate non-Chinese origin for their low-carbon steel wire, you need to file corrected entries or establish alternative supply chains within 30 days.
  • Deadline or urgency: Immediate — duties apply retroactively to entries covered by the investigation period. Customs may begin issuing supplemental duty demands on previous entries.
  • Risk if ignored: Retroactive duty liability, potential penalties for failure to report, and seizure of future shipments pending duty deposit.
  • Signal 2: Corrosion-Resistant Steel from Vietnam — Circumvention Inquiry Initiated

  • What happened: Commerce initiated a country-wide circumvention inquiry to determine whether CORE products completed in Indonesia using cold-rolled steel manufactured in Vietnam are circumventing AD/CVD orders on CORE from Vietnam (FR Doc 2026-05808). This was filed by Steel Dynamics Inc. and Nucor Corporation.
  • Who is affected: Importers of corrosion-resistant steel products (HS 7210, 7212, 7225, 7226) sourcing from Indonesia, particularly those who previously shifted supply chains from Vietnam to Indonesia to avoid duties.
  • Estimated financial impact: CORE imports from Vietnam/Indonesia combined represent approximately $1.8 billion annually. If the circumvention finding is affirmative, duty rates of 40-200% would apply, potentially adding $720 million to $3.6 billion in duties across the sector.
  • Recommended action: Map your CORE supply chain back to the steel mill level. If your Indonesian supplier uses Vietnamese-origin CRS, begin sourcing alternatives from India, Japan, or domestic mills immediately. Do not wait for the preliminary determination.
  • Deadline or urgency: Commerce will issue a preliminary determination within approximately 120 days (target: late July 2026). However, if Commerce applies provisional measures, duties could be assessed retroactively to the initiation date.
  • Risk if ignored: Retroactive duties from the initiation date (March 25, 2026), potential uncollectable duty deposits if rates are set high.
  • Signal 3: Corrosion-Resistant Steel from China — Parallel Circumvention Inquiry

  • What happened: In a parallel action, Commerce initiated a circumvention inquiry on CORE from China completed in Indonesia using Chinese-origin HRS and CRS (FR Doc 2026-05807), also filed by Steel Dynamics and Nucor.
  • Who is affected: The same universe of CORE importers sourcing from Indonesia, but this time targeting Chinese-origin steel inputs. This effectively creates a two-pronged attack on the Indonesia CORE supply chain.
  • Estimated financial impact: Chinese CORE duties can exceed 200% (combined AD + CVD). Any Indonesian CORE using Chinese steel inputs faces the full weight of these rates.
  • Recommended action: This is a diversification emergency for anyone sourcing CORE from Indonesia. The combination of the Vietnam and China circumvention inquiries means Indonesia's CORE industry is under a comprehensive review. Begin qualification of alternative suppliers in India (duty rates 5-15%), South Korea (varies by producer), or Taiwan immediately.
  • Deadline or urgency: Same timeline as Signal 2 — approximately 120 days to preliminary determination, but with retroactive risk from March 25, 2026.
  • Risk if ignored: Combined exposure to both Vietnam-origin and China-origin duty rates could make Indonesian-sourced CORE economically unviable overnight.
  • Signal 4: Section 232 Auto Parts Inclusions Window Opens

  • What happened: BIS opened the April 2026 inclusions window for submissions to add additional automobile parts to the scope of Section 232 duties (FR Doc 2026-05681). This is the formal process through which 25% tariffs can be extended to new auto parts categories.
  • Who is affected: Every auto parts importer, OEM, and aftermarket distributor. Even if your specific parts are not currently in scope, a competitor or domestic manufacturer could submit an inclusion request that targets your product category.
  • Estimated financial impact: Auto parts imports to the U.S. total approximately $175 billion annually. Each new part inclusion at 25% duty translates to roughly $2-5 billion in additional duties depending on the category.
  • Recommended action: (1) Review the current list of Section 232 covered auto parts to understand what's already included. (2) Monitor the BIS docket for new inclusion submissions. (3) If your parts are at risk, prepare and file a counter-submission arguing against inclusion. (4) Pre-negotiate pricing adjustments with suppliers to account for potential 25% duty.
  • Deadline or urgency: The inclusions window opened March 24, 2026 — submissions are accepted during the April 2026 window. Check the BIS website for the exact closing date.
  • Risk if ignored: If a competitor includes your product category and you don't file a counter-argument, 25% duties could apply with minimal notice and no transition period.
  • Signal 5: Hardwood and Decorative Plywood — Final Phase Investigation Scheduled

  • What happened: The ITC scheduled the final phase of AD/CVD investigations on hardwood and decorative plywood from China, Indonesia, and Vietnam (FR Doc 2026-05849). Commerce has already made preliminary determinations of subsidization and dumping. The product covers 34 HTS subheadings under 4412.
  • Who is affected: Importers of hardwood plywood, decorative plywood, and veneered panels (HS 4412.xx series) from China, Indonesia, and Vietnam — primarily the furniture, cabinetry, flooring, and construction industries.
  • Estimated financial impact: U.S. imports of covered plywood exceed $2.1 billion annually. Preliminary AD rates range from 15-180% depending on the country and producer, with CVD rates of 10-40% on top.
  • Recommended action: Lock in current pricing with your suppliers now before final determination rates take effect. Begin qualifying alternative sources from Brazil, Malaysia, or domestic mills. File as an interested party in the ITC proceedings if you have significant exposure.
  • Deadline or urgency: Final ITC vote expected within 45-75 days. If affirmative, final AD/CVD orders will be issued shortly thereafter.
  • Risk if ignored: Duty deposits at preliminary rates are already required — final rates could be higher than preliminary rates, creating additional liability.
  • Signal 6: New AD/CVD Orders on Erythritol from China

  • What happened: Commerce issued final AD and CVD orders on erythritol from China (FR Doc 2026-06008). This is a completed action — duties are in effect.
  • Who is affected: Importers of erythritol (a sugar alcohol used in food, beverages, and pharmaceuticals) classified under HS 2905.49 or 2940.00. Primarily affects food manufacturers, supplement companies, and beverage producers using Chinese-origin erythritol.
  • Estimated financial impact: China dominates global erythritol production with approximately 70-80% market share. U.S. imports are estimated at $150-250 million annually. AD/CVD rates will significantly increase landed costs.
  • Recommended action: Immediately review your erythritol sourcing. Check if your supplier is a named respondent with a company-specific rate or subject to the all-others rate. Evaluate alternative sources from France (Cargill), Japan, or South Korea. Update food product cost models to reflect duty-inclusive pricing.
  • Deadline or urgency: Orders are in effect now. Duty deposits are required on all new entries.
  • Risk if ignored: Customs will assess duties on all entries — failure to deposit duties results in holds, penalties, and potential bond insufficiency.
  • Signal 7: Three New ITC Section 337 Investigations

  • What happened: The ITC instituted three new Section 337 investigations targeting: (1) In-vehicle infotainment systems (FR Doc 2026-06126, filed by Zync Inc. alleging trade secret misappropriation); (2) TOPCon solar cells and modules (FR Doc 2026-06121, filed by First Solar alleging patent infringement); (3) NAND and DRAM memory chips (FR Doc 2026-06113, filed by MonolithIC 3D alleging infringement of 8 patents).
  • Who is affected: (1) Auto OEMs and infotainment suppliers; (2) Solar panel importers and installers, particularly those using TOPCon technology from Chinese manufacturers; (3) Memory chip importers and electronics manufacturers using NAND/DRAM.
  • Estimated financial impact: These investigations could result in exclusion orders banning imports of covered products. The solar investigation alone could affect $8-12 billion in annual solar panel imports if a general exclusion order is issued.
  • Recommended action: Solar importers should immediately verify if their panels use TOPCon technology from respondent manufacturers. Electronics importers should review their NAND/DRAM supply chain for exposure to MonolithIC 3D's patents. Auto companies should assess infotainment system exposure.
  • Deadline or urgency: ITC investigations typically run 12-18 months to final determination. However, preliminary relief (temporary exclusion orders) can be issued within 90 days.
  • Risk if ignored: An exclusion order would ban imports at the border — there is no tariff workaround, no bonding option. Products are physically stopped by CBP.

HS Code Watch List

HS CodeDescriptionAction TypeCurrent DutyPotential New DutyEffective DatePriority

|---|---|---|---|---|---|---|

7314.20Welded wire mesh (steel)Circumvention — Final0-6.5%60-120% (AD/CVD)ImmediateCRITICAL
7210.xxCorrosion-resistant steel (flat)Circumvention — InquiryVaries40-200%+ (AD/CVD)Retroactive to Mar 25CRITICAL
7212.xxCorrosion-resistant steel (narrow)Circumvention — InquiryVaries40-200%+ (AD/CVD)Retroactive to Mar 25CRITICAL
4412.xx (34 subheadings)Hardwood/decorative plywoodAD/CVD Final PhasePreliminary rates in effect15-180% AD + 10-40% CVD45-75 daysHIGH
2905.49 / 2940.00ErythritolAD/CVD Order — Final0-6.5%AD + CVD rates (TBD per producer)In effect nowHIGH
7213.10 / 7214.20Steel rebar (Algeria)CVD — Final0%CVD rate (TBD)In effect nowHIGH
8528.xxIn-vehicle infotainment systemsSection 337 InvestigationVariesExclusion order possible12-18 monthsMEDIUM
8541.40 / 8501.71TOPCon solar cells/modulesSection 337 InvestigationVariesExclusion order possible12-18 monthsHIGH
8542.32NAND/DRAM memory chipsSection 337 InvestigationVariesExclusion order possible12-18 monthsMEDIUM
3918.10 / 4814.xxThermal paper (Germany)AD Review — PreliminaryAD rate in effectPossible 0% (no dumping found)Pending finalMEDIUM
3903.xx / 3920.xxPET film (India/Taiwan/China/UAE)AD/CVD Order ContinuationExisting AD/CVD ratesNo change — orders continuedOngoingLOW
8708.xxAutomobile parts (various)Section 232 Inclusions0-2.5%25%April 2026 windowHIGH
2922.42Monosodium glutamate (China/Indonesia)5-Year Review — ExpeditedExisting AD rateOrders likely continuedPendingLOW
2918.15Citric acid (China)AD Review — Final ResultsAD rate varies0% for RZBCIn effectMEDIUM
2826.90Lithium hexafluorophosphate (China)AD/CVD Petition — Extended deadline0-5.5%TBD — petition adequacy pendingExtendedMEDIUM
7304.29 / 7306.29Oil country tubular goods5-Year Review — FullExisting AD/CVD ratesOrders likely continuedExtended +90 daysLOW
4702.00High purity dissolving pulp (Brazil)CVD Preliminary0%CVD rate (TBD)Aligned with ADMEDIUM

Product Category Deep Dives

Deep Dive 1: Steel Products — The Circumvention Crackdown

Current duty structure: Corrosion-resistant steel products (CORE) from China carry combined AD/CVD rates exceeding 200% for most producers. CORE from Vietnam faces rates of 40-120%. Standard steel welded wire mesh from Mexico carries AD/CVD rates originally targeted at Chinese-origin mesh, but the circumvention finding now extends those rates to Mexican-assembled mesh using Chinese wire.

What's changing: Commerce has simultaneously: (1) Finalized a circumvention finding on welded wire mesh from Mexico (FR Doc 2026-05809), (2) Initiated circumvention inquiries on CORE from Vietnam via Indonesia (FR Doc 2026-05808), and (3) Initiated circumvention inquiries on CORE from China via Indonesia (FR Doc 2026-05807). This represents a coordinated three-front enforcement action driven by petitions from Steel Dynamics Inc. and Nucor Corporation — the two largest domestic steel producers with combined revenue exceeding $45 billion.

Price impact model: For welded wire mesh: current landed cost from Mexico of approximately $850-950/ton could rise to $1,400-2,000/ton with full AD/CVD duties — a 65-110% increase. For CORE from Indonesia: current landed cost of approximately $700-800/ton could face duties of $280-1,600/ton depending on origin determination — an increase of 40-200%. These estimates assume the highest applicable rates; company-specific rates may be lower.

Sourcing alternatives matrix:

Source CountryProductEstimated Duty RateLead TimeQualityCapacity Constraints

|---|---|---|---|---|---|

IndiaCORE5-15% (CVD)8-12 weeksGoodModerate — expanding capacity
South KoreaCORE0-25% (varies by producer)6-8 weeksExcellentTight — high domestic demand
TaiwanCORE0-10%6-10 weeksExcellentLimited — small producers
BrazilWelded wire mesh0-5%10-14 weeksGoodModerate
TurkeyCORESubject to existing AD8-12 weeksGoodModerate
Domestic (US)All steel0%4-6 weeksExcellentTight — 80%+ utilization

Action checklist:

1. By April 7: Complete supply chain audit — identify ALL steel products sourced from Mexico, Indonesia, Vietnam, or China, directly or indirectly

2. By April 14: Request origin certificates and mill test reports from all steel suppliers confirming the country of melt and pour

3. By April 21: File any necessary prior disclosure with CBP for historical entries that may be subject to circumvention duties

4. By April 30: Execute backup supply agreements with alternative sources identified above

5. Ongoing: Engage a customs attorney if your annual steel imports exceed $1 million — the litigation risk from these actions is substantial

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Deep Dive 2: Automotive Sector — Section 232 Expansion

Current duty structure: Finished automobiles face 25% Section 232 tariffs as of April 3, 2025. Auto parts are partially covered — the scope has been expanding through the inclusions process. Currently covered parts include certain engines, transmissions, electrical components, and body stampings. The base MFN rate for most uncovered auto parts is 0-2.5%.

What's changing: The April 2026 inclusions window (FR Doc 2026-05681) opens the next round of petitions to add new auto parts categories to the 25% Section 232 scope. BIS and ITA jointly manage this process, and historically, 60-70% of submitted inclusion requests have been approved in subsequent rounds. The Section 337 investigation on in-vehicle infotainment systems (FR Doc 2026-06126) adds a secondary risk — Zync Inc.'s trade secret claim could result in an exclusion order on specific infotainment platforms.

Price impact model: For a typical imported vehicle with $8,000-12,000 in parts content, each major part category added to Section 232 scope adds approximately $200-500 per vehicle. If the April round adds 3-5 new part categories (a reasonable estimate based on past rounds), the cumulative impact could be $600-2,500 per vehicle. For aftermarket parts importers, margins of 15-25% could be entirely eliminated by a 25% duty on their specific product lines.

Sourcing alternatives matrix:

Source CountryAuto Parts CapacitySection 232 StatusLead TimeNotes

|---|---|---|---|---|

Mexico (USMCA)Very highExempt if USMCA-qualifying3-7 daysMust meet USMCA rules of origin
Canada (USMCA)HighExempt if USMCA-qualifying3-7 daysStrong in engines, transmissions
JapanVery highSubject to 25%6-10 weeksHighest quality, highest cost
South KoreaHighSubject to 25%6-10 weeksStrong in electronics
Domestic (US)GrowingN/A2-4 weeksCapacity expansion ongoing

Action checklist:

1. Immediately: Review which of your imported auto parts are NOT yet covered by Section 232 — these are your at-risk products

2. By April 15: File defensive submissions with BIS if any of your parts are likely targets for inclusion

3. By April 30: Conduct a USMCA rules-of-origin analysis for parts currently sourced from Japan/Korea/EU to determine if USMCA-qualifying production in Mexico or Canada is viable

4. By May 15: Renegotiate supplier contracts to include Section 232 duty-sharing clauses

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Deep Dive 3: Food & Chemical Ingredients — New Trade Barriers

Current duty structure: Erythritol from China has been subject to investigation, and final AD/CVD orders were just issued (FR Doc 2026-06008). Citric acid and citrate salts from China face existing AD/CVD orders now under expedited five-year review (FR Doc 2026-05848), with final review results for the 2023-2024 period showing RZBC received a 0% rate (FR Doc 2026-05737). Monosodium glutamate from China and Indonesia is under expedited five-year review (FR Doc 2026-05951). Lithium hexafluorophosphate from China faces a new AD/CVD petition with an extended deadline for adequacy determination (FR Doc 2026-06128).

What's changing: The erythritol orders represent a new trade barrier that did not exist before this week. For citric acid, the RZBC 0% rate is significant — it means one of China's largest producers can export duty-free, while competitors face continued AD/CVD rates. The MSG five-year review will determine whether existing orders continue for another five years. The lithium hexafluorophosphate petition, if found adequate, would open an entirely new front in the trade war over EV battery materials.

Price impact model: Erythritol: Chinese-origin product represents approximately 70-80% of global supply. With AD/CVD orders, expect a 20-40% price increase in the U.S. market as demand shifts to limited non-Chinese capacity (primarily in France, Japan, and South Korea). Citric acid: The bifurcated outcome (RZBC at 0%, others at higher rates) will create a two-tier pricing structure — buyers who can source from RZBC maintain current pricing, others face 10-20% premiums. Lithium hexafluorophosphate: If orders are imposed, this could add $500-1,500 per ton to a critical EV battery component.

Sourcing alternatives matrix:

ProductAlternative SourceAvailabilityPrice PremiumLead Time

|---|---|---|---|---|

ErythritolFrance (Cargill)Limited+30-50%8-12 weeks
ErythritolJapan/South KoreaModerate+20-35%6-10 weeks
Citric acidRZBC (China, 0% rate)HighFlat4-8 weeks
Citric acidThailand/IndiaModerate+5-15%6-10 weeks
MSGIndonesia/VietnamHigh+5-10%4-8 weeks
LiPF6Japan/South KoreaLimited+40-60%8-14 weeks

Action checklist:

1. Immediately: Verify if your erythritol supplier is Chinese-origin and determine the applicable duty rate

2. By April 7: Contact Cargill, Mitsubishi, or CJ CheilJedang for alternative erythritol quotes

3. By April 14: If you use citric acid, contact RZBC directly — their 0% rate makes them the most competitive Chinese source

4. By April 30: For LiPF6 users — file as an interested party in the petition proceedings to monitor and influence outcomes

5. Ongoing: Update all food/chemical product cost models to include duty-adjusted pricing

Strategic Analysis

## The Steel Circumvention Crackdown: A New Chapter in the Trade Enforcement Playbook

The Development

This week's three simultaneous circumvention actions — targeting welded wire mesh assembled from Mexican-processed Chinese wire (FR Doc 2026-05809) and corrosion-resistant steel products completed in Indonesia using Vietnamese and Chinese inputs (FR Docs 2026-05808, 2026-05807) — represent the most significant enforcement escalation in the steel sector since the original Section 232 tariffs of 2018. What makes these actions exceptional is not any single case, but the coordinated, multi-country strategy being deployed by domestic producers to close every major circumvention pathway simultaneously.

Historical Parallel

The closest historical precedent is the 2001-2003 steel safeguard period under President George W. Bush, when the U.S. imposed tariffs of 8-30% on steel imports. At that time, circumvention via third-country processing emerged within 6-9 months. Commerce eventually issued 17 separate circumvention findings between 2002 and 2005. The key lesson from that period: once circumvention enforcement begins in earnest, it cascades across countries and product categories for 2-3 years before stabilizing. Importers who adapted early (within the first 6 months) saw 40% lower duty exposure than those who waited.

In the current cycle, we are now approximately 18 months into aggressive enforcement following the April 2025 tariff escalation. The pattern is remarkably consistent — initial tariffs → supply chain shift to third countries → domestic industry petitions alleging circumvention → Commerce initiates inquiries → affirmative findings → new petitions targeting the next alternative source. We are in the third wave of this cycle, and Indonesia is the current target because it became the primary processing destination after Vietnam and China were directly targeted.

Stakeholder Map

The driving force behind all three actions is Steel Dynamics Inc. (STLD, ~$22B revenue) and Nucor Corporation (NUE, ~$28B revenue), America's two largest EAF (electric arc furnace) steel producers. Both companies have invested heavily in domestic capacity expansion — Nucor's Gallatin, KY mill and SDI's Sinton, TX flat-rolled mill together represent over $5 billion in recent capital investment. Their strategy is clear: use trade enforcement to ensure these domestic investments achieve target utilization rates by closing import alternatives.

On the opposing side, importers are represented primarily through the American Institute for International Steel (AIIS) and specific industry coalitions. The construction industry, represented by the Associated General Contractors of America (AGC) and the National Association of Home Builders (NAHB), consistently argues that steel tariffs and circumvention findings raise construction costs. However, these groups have been largely unsuccessful in opposing circumvention findings because the legal standard favors the domestic industry.

Supply Chain Implications

The first-order effect is straightforward: importers using Mexico → U.S. assembly for wire mesh and Indonesia-processed CORE face immediate or imminent duty exposure. The second-order effect is more consequential — Indonesia's viability as a steel processing hub is fundamentally compromised by the dual China + Vietnam circumvention inquiries. If both are affirmed (probability: 70% based on historical rates), Indonesia joins the list of countries where CORE processing carries unacceptable duty risk, alongside China, Vietnam, and potentially India (which faces its own CVD orders).

The third-order effect is the most strategically significant: the shrinking set of duty-free supply chain options is compressing global steel pricing upward. Every closed circumvention pathway increases demand for the remaining duty-free sources (South Korea, Taiwan, Brazil), which have limited excess capacity. This creates a structural floor under domestic U.S. steel prices — exactly what Nucor and SDI need to justify their capacity investments.

Three Scenarios

Best case (15% probability): Commerce finds that Indonesian CORE is substantially transformed and does NOT constitute circumvention. Importers continue sourcing from Indonesia with minor adjustments to documentation. The wire mesh finding from Mexico remains limited in scope. Impact: +5-10% cost increase from compliance overhead only.

Base case (55% probability): Commerce issues affirmative preliminary circumvention findings on both Indonesia inquiries within 120 days. Retroactive duties apply from March 25, 2026. However, some Indonesian producers can demonstrate non-Chinese and non-Vietnamese steel inputs and receive exclusions. Impact: +25-50% cost increase for affected CORE products, with partial mitigation through supply chain restructuring over 6-12 months.

Worst case (30% probability): Commerce issues broad affirmative findings with high duty rates, applies them retroactively, and domestic petitioners file additional circumvention inquiries targeting the next alternative sources (India, Turkey, Brazil). The Section 232 auto parts expansion adds further cost pressure. Impact: +50-100% cost increase for affected products, supply chain disruption lasting 12-18 months, and significant passthrough to consumer prices in construction, automotive, and manufacturing.

The Contrarian Take

The consensus view is that this crackdown will permanently close the Indonesia pathway and force importers to source domestically. But here's what the consensus may be getting wrong: Indonesia's steel industry is rapidly building its own primary steelmaking capacity. PT Krakatau Steel and PT Gunung Raja Paksi are investing in integrated mills that would produce CORE from Indonesian-origin slab, not Chinese or Vietnamese inputs. If these investments come online in 2027-2028, circumvention concerns become moot — but the domestic U.S. industry will have locked in 2+ years of elevated pricing and market share during the transition. The contrarian bet: companies that maintain Indonesian supplier relationships through this turbulent period and secure supply agreements from new Indonesian domestic capacity may find themselves with a significant cost advantage in 2028 when competitors have fully committed to higher-cost domestic or USMCA sources.

Compliance Deadlines Calendar

DeadlineWhatFR DocWho Must ActConsequence of Missing

|---|---|---|---|---|

ImmediateWelded wire mesh circumvention duties in effect2026-05809Importers of Mexican wire meshRetroactive duty liability, penalties
ImmediateErythritol AD/CVD duty deposits required2026-06008Chinese erythritol importersEntry holds, bond insufficiency
ImmediateSteel rebar CVD duties from Algeria in effect2026-06006Algerian rebar importersDuty deposits required on new entries
Mar 25, 2026 (retroactive)CORE circumvention inquiry initiation date2026-05808 / 2026-05807Indonesian CORE importersRetroactive duties from this date if affirmed
April 2026 windowSection 232 auto parts inclusion submissions2026-05681Auto parts importers/domestic producersMiss opportunity to include or oppose inclusions
~45-75 days (May-June 2026)Hardwood plywood final ITC determination2026-05849Plywood importers from China/Indonesia/VietnamFinal AD/CVD orders issued
~120 days (~Jul 2026)CORE circumvention preliminary determination2026-05808 / 2026-05807Indonesian CORE importersProvisional measures may apply
TBD (extended)LiPF6 petition adequacy determination2026-06128Lithium battery material importersInvestigation initiation if adequate
TBDCitric acid CVD preliminary (Canada/India) — postponed2026-05806Citric acid importersNew deadline pending
TBDOCTG five-year review completion2026-05675OCTG importers (India/SK/Turkey/Ukraine/Vietnam)Orders continued or revoked
OngoingAD/CVD administrative reviews — February anniversaries initiated2026-06127All importers of covered productsMust participate or face adverse rates

China LATAM EU APAC Trade Monitor

China

This week's actions confirm that China remains the primary target of U.S. trade enforcement, with no signs of easing. New AD/CVD orders on erythritol (FR Doc 2026-06008) extend the trade war into the food ingredients sector, while the continuation of PET film orders (FR Doc 2026-06007) from China signals that existing duties will remain entrenched for another five-year cycle. The CORE circumvention inquiry (FR Doc 2026-05807) targeting Chinese-origin steel processed in Indonesia demonstrates that enforcement now follows Chinese inputs through any intermediate country. Perhaps most significantly, the lithium hexafluorophosphate petition (FR Doc 2026-06128) — if it proceeds — would open a new front in the EV supply chain decoupling, targeting a critical battery electrolyte component where China controls approximately 85% of global production. The expedited five-year reviews on MSG (FR Doc 2026-05951) and citric acid (FR Doc 2026-05848) from China will almost certainly result in continued orders, maintaining the trade barrier wall around Chinese chemical exports. The single bright spot for China-sourced importers: RZBC's 0% antidumping rate on citric acid (FR Doc 2026-05737), showing that company-specific litigation can still yield favorable outcomes.

Latin America

The Mexico circumvention finding on welded wire mesh (FR Doc 2026-05809) is the week's most consequential LATAM development. This is not an abstract trade ruling — it is a direct hit on the nearshoring narrative that has driven billions in manufacturing investment along the U.S.-Mexico border. The finding that Mexican assembly from Chinese-origin wire constitutes circumvention creates a precedent that could be applied to other products where Mexican manufacturers use Chinese inputs. USMCA compliance is now insufficient on its own — Commerce is looking through the assembly to the origin of inputs. Meanwhile, the Section 232 auto parts inclusions window (FR Doc 2026-05681) creates both risk and opportunity for LATAM auto parts suppliers: USMCA-qualifying parts remain exempt, but the rules-of-origin analysis has become mission-critical for determining whether specific parts qualify. The steel rebar CVD on Algeria (FR Doc 2026-06006) has indirect LATAM relevance — Brazilian and Mexican rebar exporters may benefit from reduced Algerian competition in the U.S. market. The dissolving pulp CVD from Brazil (FR Doc 2026-05805) is a reminder that Latin American exporters are not immune from U.S. trade actions.

EU

European trade developments this week center on administrative and review actions rather than new investigations. The thermal paper from Germany preliminary review (FR Doc 2026-06016) found no dumping during the 2023-2024 period — if this holds in final results, it would be a rare victory for a European exporter in a U.S. AD proceeding. Commerce's partial rescission covering 14 companies in this review suggests that many German producers have successfully adjusted their pricing to avoid dumping margins. The aluminum lithographic printing plates remand from China and Japan (FR Doc 2026-05847) reflects ongoing judicial review of ITC determinations — the CIT remand could result in revised injury findings that affect Japanese (and by extension, EU-aligned) producers. No new EU-specific tariff actions were initiated this week, but the Section 232 auto parts inclusions process has significant EU relevance given that German, Italian, and French auto parts manufacturers supply billions of dollars to U.S. OEMs.

APAC

Southeast Asia is ground zero for trade enforcement activity this week. The dual circumvention inquiries targeting CORE processed in Indonesia (FR Docs 2026-05808, 2026-05807) fundamentally challenge Indonesia's role as an alternative steel processing hub — a role it assumed specifically because importers were seeking to avoid China and Vietnam duties. Vietnam faces the same double pressure: it is both a target of circumvention enforcement (via the Indonesia inquiry on Vietnamese-origin CRS) and a subject of ongoing AD/CVD orders on multiple product categories. The TOPCon solar cell investigation (FR Doc 2026-06121, filed by First Solar) primarily targets Chinese manufacturers, but Chinese companies have been rapidly establishing solar manufacturing capacity in Southeast Asia (Thailand, Vietnam, Malaysia, Cambodia), meaning the investigation's reach extends across the region. The U.S.-Australia tariff-rate quota publication (FR Doc 2026-06207) is routine but notable — it signals the continued expansion of preferential market access for Australia, which has been positioning itself as a trusted supply chain partner for critical minerals and agricultural products. For APAC-sourcing importers, the message is clear: the era of duty-free transshipment through Southeast Asia is ending, and companies must invest in genuine value-added manufacturing to withstand circumvention scrutiny.

What Were Watching Next Week

1. Section 232 Auto Parts Inclusion Submissions

When: April 2026 window (exact dates via BIS.gov)

Why it matters: The first submissions will signal which auto parts categories domestic producers are targeting for 25% tariffs. Early filings often telegraph the most likely inclusions — historically, parts with high import penetration from non-USMCA countries are targeted first. Any importer of auto parts from Japan, South Korea, Germany, or China should be monitoring this docket daily.

How to prepare: Register for email alerts on the BIS Section 232 docket. Prepare counter-arguments for your most vulnerable product categories.

2. Hardwood Plywood Final Phase Proceedings

When: ITC hearing and staff report expected in the next 4-6 weeks

Why it matters: Final AD/CVD rates on plywood from China, Indonesia, and Vietnam could be significantly higher or lower than preliminary rates. The ITC's injury determination will be based on the most recent data, which includes the construction slowdown. A negative injury finding (unlikely but possible, estimated 15% probability) would revoke all preliminary duties. An affirmative finding locks in duties for at least five years.

How to prepare: If you import covered plywood, file pre-hearing briefs with the ITC. Secure alternative supply contracts contingent on the outcome.

3. CORE Circumvention — Early Procedural Signals

When: First 30 days of the investigation (by late April)

Why it matters: Commerce's early procedural decisions — such as whether to apply provisional measures or request a scope ruling — will signal how aggressively this inquiry is being pursued. If Commerce issues a preliminary circumvention finding with duty deposits required during the investigation, the financial impact is immediate.

How to prepare: Engage customs counsel now if your CORE imports from Indonesia exceed $500,000 annually. Prepare prior disclosure filings if you have historical entries that may be covered.

4. FRED Data Releases — March CPI and Import Prices

When: CPI typically released mid-April; Import Price Index released shortly after

Why it matters: The three-month uptrend in import prices (141.4 → 142.2 → 144.0) may accelerate if March data reflects the full impact of recent tariff actions. PPI Manufacturing's sharp jump to 257.340 suggests pipeline inflationary pressure that hasn't fully reached consumer prices yet. If March CPI shows acceleration, expect renewed political attention to tariff costs.

How to prepare: Update your pricing models to assume continued cost escalation. Begin conversations with customers about Q2 price adjustments now rather than waiting for the data.

5. Lithium Hexafluorophosphate Petition Adequacy Decision

When: Extended deadline — exact date TBD (FR Doc 2026-06128)

Why it matters: If Commerce finds the AD/CVD petition adequate, it initiates a formal investigation that could result in duties on China's most critical EV battery material export. This would be the highest-profile trade action in the EV supply chain since the Section 301 tariffs on Chinese EVs. The adequacy decision itself moves markets — expect lithium industry stocks and LiPF6 spot prices to react within hours of the announcement.

How to prepare: EV battery manufacturers and material importers should diversify LiPF6 sourcing to Japanese and South Korean producers now, before any investigation raises prices further.

Cite This Report

Tariff Tracker Research Team. "Steel Circumvention Crackdown Expands as Section 232 Auto Parts Window Opens — Importers Face Multi-Front Compliance Surge." Tariff Tracker Daily Intelligence, Edition #5, 2026-03-31. https://tariff-tracker.online/2026/03/31/tariff-tracker-daily-intelligence/