( CNN)Sen Lindsey Graham claimed Wednesday he'll summon details from the FBI over President Donald Trump's wiretapping allegations if bureau Director James Comey does not supply details regarding whether there is any kind of validity to the President's cases.

Earlierthis month, Trump declared– without offering proof– that Obama purchased his phones to be wiretapped at Trump Tower throughout the project. Graham and alsoSen Sheldon Whitehouse, D-RhodeIsland, both asked the Justice Department recently to use any kind of proof that would certainly sustain Trump's cases.

“Wecomposed a letter–Sen Whitehouse and also myself– needing to know if there's proof of a warrant released by the Trump project,” the South Carolina Republican informed CNN's Chris Cuomo on “NewDay.” “Hehasn't already addressed that letter or supported if there's an actual examination of the Trump project.”