Washington (CNN) Senate Intelligence Committee Chairman Richard Burr said "any goodwill" his panel may have had toward Michael Cohen was gone after President Donald Trump's former lawyer "stiffed" them -- a point Cohen's attorney disputed later Tuesday.

"I can assure you that any goodwill that might have existed in the committee with Michael Cohen is now gone," the North Carolina Republican told reporters Tuesday on Capitol Hill.

Burr reiterated that his committee had "no factual evidence of collusion between the Trump campaign and Russia," but that he wanted to interview Cohen before the former lawyer for President Donald Trump reports to federal prison next month.

"I would prefer to get him before he goes to prison, but you know, the way he's positioning himself, not coming (to) the committee, we may help him go to prison," Burr said.

Cohen was set to speak before Congress three times this month, but has delayed all appearances, including postponing a hearing before the Senate Intelligence Committee.

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