GOP Sen. Ron Johnson on Trump suing the IRS for $10 billion: ‘My preference would be to do a robust investigation’

Republican Senator Ron Johnson reacts to President Trump suing the IRS for $10 billion, telling Dana Bash, “The problem is, we don’t have $10 billion. My preference would be to do a robust investigation, find out who leaked those tax returns. That’s a federal crime, and punish those individuals to the folks that are in the law.”