CBP final rule requires ACE electronic export manifest for rail cargo to Mexico and Canada
CSMS # 69684363 - U.S. Customs and Border Protection publishes Final Rule to require Automated Commercial Environment (ACE) Electronic Export Manifest (EEM) for the Rail Mode of Transportation - Final Rule - 19 CFR Parts 103, 113, 123, and 192
CBP published a final rule on August 26, 2026 requiring electronic transmission of export manifest data in ACE for cargo departing the United States by rail, including trains to Mexico and Canada. The rule identifies the parties eligible to transmit and the time frames before departure in which the information is due. It is effective October 26, 2026, and CBP will begin enforcing it on October 26, 2027.
Rail carriers and other eligible parties must file export manifest data electronically in ACE before departure, with CBP enforcement beginning October 26, 2027.
Source: CBP · CSMS · content.govdelivery.com