Republican debate: Marco Rubio finds his fire

Houston (CNN)Marco Rubio was on fire Thursday night. For months, the Florida senator resisted taking on Republican front-runner and expert attack dog Donald Trump, much to the chagrin of the GOP establishment. That reluctance evaporated during the final GOP presidential debate before Super Tuesday. Standing to the right of Trump, Rubio delivered one blow after another at the billionaire businessman, attacking him on everything from immigration to foreign policy and health care to the businessman's hiring practices. And to Trump's left, Ted Cruz delighted in joining in the pile-on. In the middle of a debate filled with fireworks and filled with barely audible exchanges in which the three candidates furiously talked over one another, Trump pointed to the two men flanking him and lashed out: "This guy is a choke artist," he said, turning to Rubio, "and this guy's a liar," he said of Cruz. CNN Podcast: GOP Republican debate in Houston, hour 1 ...