House Intelligence Committee Chairman Devin Nunes (R-Calif.) said in an interview with Fox News on Sunday he has seen "no evidence of collusion" between President Trump's campaign and the Russian government, nor has he seen evidence of a physical wiretap on Trump Tower by the Obama administration.

"The president doesn't go and physically wiretap something," Nunes told host Chris Wallace, referencing President Trump's allegation that former President Obama spied on Trump Tower. "So if you take [Trump] literally, it didn't happen. I think the concern that we have is: Were there any other surveillance activities that were used?"

Wallace followed up, asking if Nunes had seen "any evidence of collusion" between "Trump world and the Russians to swing the 2016 presidential election." "I'll give you a very simple answer: No," the congressman replied. "Up to speed on everything I have up to this morning, no evidence of collusion."

The House Intelligence Committee will interview FBI Director James Comey and NSA Director Mike Rogers about Russia and the election on Monday.