GOP Debate Turns Testy

Rudy Giuliani and Mitt Romney wasted little time getting into attack mode tonight as the eight Republican candidates squared off in a feisty debate. Romney said Giuliani encouraged illegal aliens to settle in NYC when he was mayor, and Giuliani accused Romney of employing illegal aliens at his home, which he labeled a "sanctuary mansion." At one point, the audience booed Giuliani when he persisted in his attack, the AP reports.

When Romney said it would be un-American to check the papers of workers because of "funny accents," Giuliani criticized his "holier-than-thou" attitude. The fireworks between the top two contenders stole the thunder of the debate, in which candidates answered live questions from people on YouTube on everything from abortion to farm subsidies.