Customs and Border Patrol: Resources Needed for Reopening Rail Line From Mexico-U.S. Border Into the United States

Pursuant to a congressional request, GAO provided information on the resources: (1) used by the U.S. Customs Service and the Immigration and Naturalization Service (INS) to monitor freight service on operating rail lines from San Diego to Tecate, Mexico; and (2) that Customs and INS believe would be necessary to detect and deter illegal activities associated reopening the rail line.