House Oversight chair: 'I have not seen anything directly' to support Trump's wiretapping claims

House Oversight and Government Reform Committee Chairman Rep. Jason Chaffetz (R-Utah) said Monday morning that he has not seen evidence to support President Donald Trump's allegations that the Obama administration wiretapped into his phones during the campaign.

Chaffetz told CBS' "This Morning" that he plans to "keep [his] eyes wide open" but was not yet aware of any evidence to support Trump's Saturday tweet that the Obama administration tapped into Trump Tower during the final weeks of the presidential campaign. Trump did not offer any evidence along with his allegations.

"Thus far, I have not seen anything directly that would support what the president has said," Chaffetz said Monday.

He noted that since President Barack Obama would have needed a court's permission to wiretap into Trump's building, "there should be a paper trail" if Trump is correct.

"It's a very serious allegation. The president has at his fingertips tens of billions of dollars in intelligence apparatus," Chaffetz said. "I've got to believe, I think, he might have something there, but if not, we're going to find out."

The Trump administration asked Congress Sunday to look into whether the Obama administration abused its authority with the order to wiretap Trump Towers, as Trump alleged.

"Reports concerning potentially politically motivated investigations immediately ahead of the 2016 election are very troubling," White House press secretary Sean Spicer said in a statement Sunday. "President Donald J. Trump is requesting that as part of their investigation into Russian activity, the congressional intelligence committees exercise their oversight authority to determine whether executive branch investigative powers were abused in 2016."

Chaffetz promised that Congress would "look at the facts" surrounding the allegations but added that it would not be a speedy investigation.

"It's going to take us some time to unravel this, but we will get there," he said.