Customs To Merge Into Department Of Homeland Security

SAN YSIDRO, CA - FEBRUARY 24: Spenser, a drug-sniffing yellow lab handled by U.S. Customs canine enforcement officer Joe Cagigas (L), follows close to a car entering the U.S. from Mexico after catching the scent of a substance hidden in the car's door panels that later tested positive for methamphetamine at the San Ysidro Port of Entry February 24, 2003 in San Ysidro, California. The San Ysidro Port of Entry is the world's busiest land border crossing, with approximately 45 to 60,000 cars crossing daily, and is favored by many contraband smugglers because if its proximity to large California cities. On March 1, U.S. Customs will merge with the Immigration and Naturalization Service (INS) under the U.S. Department of Homeland Security. (Photo by David McNew/Getty Images)