# 2026-11263: Mexico Rail Couplers Get Final Antidumping Duties

2026-11263, Certain Freight Rail Couplers and Parts Thereof From Mexico: Final Results of Antidumping Duty Administrative Review; 2023-2024, is a Federal Register notice from Commerce Department, International Trade Administration published 2026-06-04, effective 2026-06-04; PRIA reads it as touching household money (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2026-11263
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-11263
- Title: Certain Freight Rail Couplers and Parts Thereof From Mexico: Final Results of Antidumping Duty Administrative Review; 2023-2024
- Type: Notice
- Agencies: Commerce Department; International Trade Administration
- Citation: 91 FR 33695
- Published: 2026-06-04
- Effective: 2026-06-04
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

Mexico Rail Couplers Get Final Antidumping Duties

## Summary

The U.S. Department of Commerce found that certain freight rail couplers from Mexico were sold in the U.S. at unfairly low prices between May 2023 and October 2024. Because of this, they’re finalizing extra duties (taxes) to level the playing field for American businesses. These changes take effect starting June 4, 2026, impacting importers and manufacturers involved with these rail parts.

## Abstract

The U.S. Department of Commerce (Commerce) determines that certain freight rail couplers and parts thereof (freight rail couplers) from Mexico were sold in the United States at less than normal value during the period of review (POR), May 3, 2023, through October 31, 2024.

## Effects PRIA read

- Final Dumping Margin Set at 6.50%: cost, medium. Commerce found that Amsted Rail Company, Inc. and ASF-K de Mexico had a weighted-average dumping margin of 6.50% for sales to the U.S. during May 3, 2023 through October 31, 2024. This final margin is reflected in the review published June 4, 2026.
- Duties Assessed Ad Valorem; Timing Rules: cost, medium. Commerce will instruct U.S. Customs and Border Protection to assess antidumping duties on an ad valorem basis (not per-unit). Assessment instructions will be issued no earlier than 41 days after publication (June 4, 2026), and CBP may delay liquidation for relevant entries if a timely summons is fi…
- Cash Deposit Rates Take Effect June 4, 2026: cost, high. For shipments entered or withdrawn for consumption on or after June 4, 2026, cash deposit requirements apply: Amsted's cash deposit rate will equal the 6.50% company-specific margin; exporters/producers covered in prior segments keep their published rates; and the cash deposit rate for all other pr…
- Importer Certification and Double-Duty Risk: cost, medium. Importers must file a certificate about reimbursement of antidumping duties before liquidation of relevant entries under 19 CFR 351.402(f)(2). If an importer fails to file this certificate, Commerce may presume reimbursement occurred and assess double antidumping duties.

## Related documents

- [2025-05481](https://policyrisk.com/federal-register/2025-05481): Regulations Enhancing the Administration of the Antidumping and Countervailing Duty Trade Remedy Laws; Correction, 2025-03-31
- [2026-20777](https://policyrisk.com/federal-register/2026-20777): Certain Paper Shopping Bags From Cambodia: Preliminary Results of Antidumping Duty Administrative Review; 2024-2025, 2026-10-09
- [2026-20779](https://policyrisk.com/federal-register/2026-20779): Passenger Vehicle and Light Truck Tires From Thailand: Preliminary Results and Rescission, in Part, of Antidumping Duty Administrative Revi…, 2026-10-09
- [2026-20778](https://policyrisk.com/federal-register/2026-20778): Certain Hot-Rolled Steel Flat Products From the Republic of Korea: Final Results of Countervailing Duty Administrative Review; 2023, 2026-10-09
- [2026-20690](https://policyrisk.com/federal-register/2026-20690): Oleoresin Paprika From India: Antidumping Duty Order and Countervailing Duty Order, 2026-10-08
- [2026-20691](https://policyrisk.com/federal-register/2026-20691): Certain Paper Shopping Bags From Taiwan: Preliminary Results and Rescission, in Part, of Antidumping Duty Administrative Review; 2024-2025, 2026-10-08

## Sources
- [2026-11263 on federalregister.gov](https://www.federalregister.gov/documents/2026/06/04/2026-11263/certain-freight-rail-couplers-and-parts-thereof-from-mexico-final-results-of-antidumping-duty)
- [2026-11263 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-06-04/pdf/2026-11263.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2026-11263 (as of 2026-06-11).