A traveler shows his ID to a radio frequency indentification reader while crossing from Mexico into the United States at the San Ysidro port of entry...
{"Image ImageDescription": "SAN DIEGO, CA - NOVEMBER 14:  A traveler shows his ID to a radio frequency indentification reader while crossing from Mexico into the United States at the San Ysidro port of entry on November 14, 2013 in San Diego, California. San Ysidro is the busiest port of entry U.S. into the United States, with some 90,000 people passing daily between Tijuana and San Diego. (Photo by John Moore/Getty Images)", "Image Copyright": "2013 Getty Images"}