LOS ANGELES (AP) - Luis Hernandez just laughs as he sells fake driver's licenses and Social Security cards to illegal immigrants near a park known for shady deals. The joke, to him and others in his line of work, is the government's promise to put people like him out of business with a tamperproof national ID card. "One way or another, we'll always find a way," said Hernandez, 35, a sidewalk operator who is part of a complex counterfeiting network around MacArthur Park, where authentic-looking IDs are available for as little as $150. Some of those coming to MacArthur Park...