Story highlights Ted Cruz failed to disclose hundreds of thousands of dollars in loans from the nation's largest banks when he ran for the Senate in 2012

Cruz did not report to the Federal Election Commission two loans from Citibank and Goldman Sachs

Washington (CNN) Ted Cruz failed to disclose hundreds of thousands of dollars in loans from the nation's largest banks when he ran for the Senate in 2012, a potential violation of federal election rules.

Cruz did not report to the Federal Election Commission two personal loans from Citibank and Goldman Sachs, where his wife works, during his come-from-behind win in the Texas Republican primary, campaign spokesman Catherine Frazier confirmed Wednesday.

The senator did eventually list the loans on personal financial disclosures, but the Cruz campaign acknowledged the mistake after the New York Times report was published.

"These loans have been disclosed over and over and over again," Cruz told reporters quickly after the news broke. "It is an inadvertent filing question. The facts of the underlying matter have been disclosed for many, many years."

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