Sen. John McCain (R-Ariz.) called for President Donald Trump to retract or prove his claim that President Barack Obama wiretapped him during the 2016 presidential campaign.
"The president has one of two choices, either retract or provide the information that the American people deserve," McCain said in a Sunday interview on CNN's "State of the Union."
McCain added that he has "no reason to believe" the allegation is true, adding that a White House official said the claim was prompted by a Breitbart article.
WATCH | Sen. John McCain calls for Trump to either retract or substantiate his wiretapping claims
"I have no reason to believe that the charge is true, but I also believe the president of the United States could clear this up in a minute," McCain said. "All he has to do is pick up the phone, call the director of the CIA, director of national intelligence and say, 'OK, what happened?'"
McCain is just one of several top lawmakers pressuring Trump to provide evidence to prove his claim.
Last week, Sens. Lindsey Graham (R-S.C.) and Sheldon Whitehouse (D-R.I.) sent a letter to FBI Director James B. Comey formally requesting "copies of any warrant applications and court orders - redacted as necessary ... related to wiretaps of President Trump, the Trump Campaign, or Trump Tower."
So far, the Trump administration has yet to provide any evidence to back the president's claim.
McCain added that not providing evidence in a timely manner, "undermines the confidence the American people have in the entire way that the government does business."