House Intelligence Committee chairman Devin Nunes, R-Calif., and the committee's ranking Democrat, Adam Schiff, D-Calif., in a letter last week asked the Justice Department to turn over by Monday any evidence showing Trump Tower was wiretapped during the 2016 presidential race. A hearing is scheduled for March 20.
"If the committee does not receive a response by then, the Committee will ask for this information during the March 20 hearing and may resort to a compulsory process if our questions continue to go unanswered," Langer said in a statement.
President Donald Trump made the explosive claim that "Obama had my "wires tapped" in Trump Tower just before the victory" via Twitter on March 4.
Kevin Lewis, a spokesman for Obama, has said "neither President Obama nor any White House official ever ordered surveillance on any U.S. citizen. Any suggestion otherwise is simply false."
Obama's director of national intelligence, James Clapper, on NBC's "Meet the Press" Sunday said that under the part of the national security apparatus that he oversaw "there was no such wiretap activity mounted against the president, the president-elect at the time, or as a candidate, or against his campaign."
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Earlier Monday, Republican Sen. Lindsey Graham said he hadn't heard back from the FBI about Trump's allegations. Graham and his Judiciary Committee colleague, Sheldon Whitehouse, D-Rhode Island, in a letter last week asked the FBI for information.
"I'm getting very ill-tempered over this," Graham said.
Graham said he planned to give FBI Director James Comey more time, though he urged him to get in touch before talking to the intelligence committee.
"If I were the FBI Director, who I like, I would respond to my letter ... before I publicly testify because you'll run afoul of the Judiciary Committee."