Mitt Romney talks immigration, and Florida, at Tuesday's debate

During the Oct. 18, 2011, Republican presidential debate in Las Vegas, former Massachusetts Gov. Mitt Romney sparred with one of his rivals, Texas Gov. Rick Perry, over immigration.

Over the last 10 years, Romney said, California and Florida have had "no increase in illegal immigration. Texas has had 60 percent increase in illegal immigrants.... If there's someone who has a record as governor with regards to illegal immigration that doesn't stand up to muster, it's you, not me."

Our analysis will tell you why Romney's not exactly right.