Cohen will provide 'road map' for SDNY Trump investigation — 'In Manhattan they can look at his personal life': Chris Christie
Michael Cohen, Donald Trump's former personal attorney, called the US president a conman and inveterate liar in dramatic testimony to Congress. (AFP / MANDEL NGAN)

Former New Jersey Gov. Chris Christie warned that the Southern District of New York is a bigger threat to Donald Trump than special counsel Robert Mueller — and that Michael Cohen made them all the more dangerous to the president.

In a radio interview with Fox Nation host Todd Starnes, Christie noted that while "Mueller has to stay within the four corners of Russia," the SDNY has "no restriction on what they can look at."

"In Manhattan, they can look at his business, they can look at his personal life,” Christie said. “They can look at the inaugural, which they're doing. They have no restrictions on what they can look at and they have two tour guides now. They've got Michael Cohen and Rick Gates, the former executive director of the inaugural and his deputy campaign manager.”

During Cohen's testimony before Congress earlier in the week, the Trump surrogate and former NJ governor noted that Republicans resorted to attacking the president's former "fixer" personally rather than "on the substance."

"There hasn’t been one Republican yet who’s tried to defend the president on the substance,” Christie told ABC News. “I think that’s something that should be concerning to the White House.”