Thursday, March 30, 2006; Posted: 11:55 p.m. EST (04:55 GMT) WASHINGTON (AP) -- House conservatives criticized President Bush, accused the Senate of fouling the air, said prisoners rather than illegal farm workers should pick America's crops and denounced the use of Mexican flags by protesters Thursday in a vehement attack on legislation to liberalize U.S. immigration laws. "I say let the prisoners pick the fruits," said Rep. Dana Rohrabacher of California, one of more than a dozen Republicans who took turns condemning a Senate bill that offers an estimated 11 million illegal immigrants an opportunity for citizenship.