The Department of Homeland Security (DHS) announced that on March 26, 2018, DHS Secretary Nielsen and other officials met with their Mexican counterparts in Mexico City to discuss economic and national security issues affecting both the United States and Mexico. During these meetings three agreements were signed. U.S. Customs and Border Protection (CBP) Commissioner Kevin McAleenan and the Tax Administration Service (SAT) Chief Osvaldo Santin signed a Memorandum of Cooperation (MOC) on Customs and Trade Enforcement, which will facilitate the development and implementation of joint and coordinated programs aimed at increasing trade and customs compliance, as well as combating illicit activities.

Additionally, CBP and SAT signed a Memorandum of Understanding (MOU) on Cargo Pre-Inspection Program and Unified Cargo Processing (UCP). This MOU states the bilateral commitment for the further implementation of cargo-pre inspection and UCP programs, through which Mexican customs officers and CBP officers will work together to inspect and process cargo shipments.

Lastly, CBP and the National Service for Agro-Alimentary Public Health, Safety and Quality (SENASICA) signed an MOU to enable collaboration between the two agencies on agriculture safeguarding, agriculture quarantine inspections at ports of entry, and information sharing. The MOU promotes cooperation and information sharing to enabling the U.S. to handle legitimate and safe shipments while addressing those that pose a risk.