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Ted Cruz opened a new line of attack on Donald Trump on Fox News Sunday, saying the GOP frontrunner owes "hundreds of millions or even billions in unpaid loans."

“If you look at his financial disclosure, he owes at least $480 million right now, and it could be billions,” Cruz said.

Cruz said that Trump attacking him over over the failure to disclose two loans during his 2012 Senate bid was "the height of chutzpah for someone who owes hundreds of millions of dollars, if not billions of dollars."

“And by the way...when Heidi and I take loans, we pay them back,” he said.

“Donald has declared bankruptcy four times. So for him to sit there owing hundreds of millions or billions or who knows and to criticize Heidi and me for putting our entire net worth into the campaign is astonishing.”

Trump repeated the attacks during an interview today with Chris Wallace, saying Cruz didn't disclose the loans or that he was born in Canada.

"What I can tell you is that he's got a situation where he didn't disclose Goldman Sachs, he didn't disclose Citibank on his personal financial disclosure form," Trump said.

"He didn't disclose to a lot of people the whole thing where he was born in Canada, which probably makes it so he might not even be able to run, according to many, many constitutional scholars. And he said he didn't even know he was a citizen of Canada until 15 months ago. So give me a break.  He shouldn't be mentioning me."

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