Ted Cruz, John Kasich only ones left in the ring with Donald Trump

Republican front-runner Donald Trump won big in Tuesday's primaries. His victory in Florida forced Florida Sen. Marco Rubio to suspend his campaign. However, Gov. John Kasich was able to win his home state of Ohio, giving him newfound momentum. With more on Trump's continued success amid a dwindling GOP field, CBS News' Major Garrett joins CBSN.