Donald Trump fires at Pope Francis over border wall remarks

Aired: 2/18/2016 | 0:03:54 | Clip
Pope Francis waded into American presidential politics on his return from a visit to Mexico, saying that "a person who thinks only about building walls…is not Christian." Republican frontrunner Donald Trump wasted no time in transforming the debate over Christian values into a fight about security. Political director Lisa Desjardins reports on the day’s campaign news.