To amend title 10, United States Code, to authorize the Secretary of Defense to assign Department of Defense personnel to assist the Immigration and Naturalization Service and the United States Customs Service perform their border protection functions.

Authorizes the Secretary of Defense, during each fiscal year, to make up to 10,000 Department of Defense personnel available to assist: (1) the Immigration and Naturalization Service in preventing the entry into the United States of terrorists, drug traffickers, and illegal aliens; and (2) the U.S. Customs Service in the inspection of cargo, vehicles, and aircraft at points of entry into the United States.