Christie said Republicans need to find someone who can do to Trump what he did to Marco Rubio in a 2016 debate, when Rubio awkwardly repeated talking points as Christie knocked him off his game. That's the only thing that will defeat Trump, Christie said.
"You have to be fearless because he will come right back at you," Christie said. "So you need to think about who's got the skill to do that and who's got the guts to do that because it's not going to end nicely. No matter what, his end will not be calm and quiet."