Sens. Lindsey Graham Lindsey Olin GrahamSenate Republicans signal openness to working with Biden Loeffler calls for hearing in wake of Netflix's 'Cuties' Quinnipiac poll shows Graham, Harrison tied in South Carolina Senate race MORE (R-S.C.) and Sheldon Whitehouse Sheldon WhitehouseRestaurant owner defends calamari as 'bipartisan' after Democratic convention appearance Warren calls on McConnell to bring Senate back to address Postal Service Senate Democrats demand answers on migrant child trafficking during pandemic MORE (D-R.I.) are requesting the Justice Department and FBI hand over any potential applications for a warrant to wiretap the Trump campaign.

"We request that the Department of Justice provide us copies of any warrant applications and court orders ... related to wiretaps of President Trump, the Trump Campaign, or Trump Tower," the two senators wrote in a letter to Dana Boente, the acting deputy attorney general, and FBI Director James Comey.

The request comes after President Trump claimed on Saturday, without offering any evidence, that former President Barack Obama Barack Hussein ObamaGOP senator blocks Schumer resolution aimed at Biden probe as tensions run high D-Day for Trump: September 29 Obama says making a voting plan is part of 'how to quarantine successfully' MORE had ordered a wiretap on his campaign.

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The senators added that once they are able to review a warrant request or any potential court orders, they would "proceed as appropriate with the oversight the President has requested.”

The letter comes after Graham told reporters earlier this week that the Judiciary subcommittee that he oversees with Whitehouse would dig into Trump's claim that the Obama administration wiretapped him ahead of the election.