CNN's Jake Tapper on Sunday called Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE's suggestion that Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE is cheating on her husband an "unhinged" and "wild" attack from the Republican presidential nominee that is "indefensible."

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While interviewing Trump surrogate Rudy Giuliani on "State of the Union," Tapper questioned whether the attack was considered "normal" or "stable" behavior from a presidential nominee.

"After she called him a racist, a misogynist, a xenophobe, I don't know, a schizophrenic, I don't know what else she called him at the end of that debate. I think it's fair game," Giuliani said.

"Just to make stuff up? Just wild accusations that Hillary Clinton is cheating on Bill [Clinton]? No proof of it whatsoever. Everything's fair game?" Tapper asked.

Trump's comments should be taken as sarcasm, Giuliani said.

"I just find it hard to believe that Mr. Trump would want to level accusations about people's marriages," Tapper said.

"The accusation was that Hillary Clinton was cheating on Bill. That was the accusation. It was an unhinged and wild accusation. I would understand why you can't defend it because it was indefensible."

Trump, speaking from a rally in Manheim, Pa., Saturday night, said he doesn't think Clinton, the Democratic presidential nominee, is "loyal to Bill."



"And really, folks, why should be be? Why should she be?"