FILE - In this 2005 file photo provided by CNN, news anchor Lou Dobbs sits on the set of his show, "Lou Dobs Tonight," in New York. Six months after Barack Obama's inauguration, a persistent and noisy legion of doubters won't let go of an already debunked claim, that he is actually a foreign-born, illegal president. Mainstream Republicans who want the issue to go away are having a tough time stamping it out as the so-called "birthers" resurface, with assists from talk show host Rush Limbaugh and CNN's Lou Dobbs.