'He's a chaos candidate': Donald Trump and Jeb Bush start the debate by shredding each other

The CNN Republican debate on Tuesday night began with GOP presidential front-runner Donald Trump and former Florida Gov. Jeb Bush exchanging verbal blows about Trump's plan to temporarily bar Muslims from entering the US.

"This is not a serious proposal. In fact, it will push the Muslim world, the Arab world, away from us," Bush said.

He added: "So Donald is great at the one-liners, but he's a chaos candidate and he'd be a chaos president. He would not be the commander-in-chief we need to keep our country safe."

Trump fired back hard by accusing Bush of only attacking him out of desperation.

"Jeb doesn't really believe I'm unhinged. He said that very simply because he has failed in this campaign. It's been a total disaster. Nobody cares," Trump said.

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