Analyzing Cruz, Trump's campaigns, response to North Korea nuke test
Donald Trump spoke for over an hour at a rally in Vermont Thursday night, where about 500 protesters gathered outside to voice anti-Trump slogans. Trump says his biggest competition, Ted Cruz, could put the GOP in geopardy with questions over his citizenship. Cruz says the legality of the issue has been settled. Major Garrett hopped aboard the Cruz bus for a conversation with the Texas senator. He joins "CBS This Morning" with more on the rivals' campaigns and their stances on national security.