Senator Lindsey Graham is serious about getting answers, in regards to President Trump’s allegations of wiretapping.

He’s so serious, he’s just placed an ultimatum on the FBI: Give us what you have on FISA warrants issued against the Trump campaign, or the Senate will stall on confirmations.

WATCH “Congress is going to flex its muscle here.” @LindseyGrahamSC on what will happen if FBI doesn't comply w/ wiretapping inquiry request pic.twitter.com/gpiXeapSf0

— TODAY (@TODAYshow) March 15, 2017

Appearing on the Today show, Graham said:

“Congress is going to flex its muscle here and you see that all over the place,” Graham said Wednesday on NBC’s “Today.”

“We’ll hold up the deputy attorney general’s nomination until Congress is provided with information to finally clear the air as to whether or not there was ever a warrant issued against the Trump campaign.”

It was in the early hours of March 4 that Trump tweeted out that Obama had wiretapped Trump Tower.

He provided no evidence and other than the media firestorm it caused, his camp has all but admitted that they wished everyone would just stop talking about it.

It was quite the can of worms. Nobody is going to stop talking about it, because if it happened, and it was done illegally, the ramifications against Obama’s administration could be significant.

If there was no warrant and no proof of wiretapping, then lawmakers and American citizens alike will have to deal with the fact that our president wakes up at 3am and fever tweets his nightmares.

Graham said Tuesday the FBI “would screw up big time” by not handing over potential applications for a warrant to wiretap Trump’s presidential campaign, or related court documents.

White House press secretary Sean Spicer said Tuesday that Trump is “extremely confident” the Department of Justice will produce evidence former President Obama wiretapped him.

That’s awesome.

The House Intel Committee had given the administration until midnight on Monday to hand over what evidence they had, which had prompted Trump’s tweets, in order that they might begin looking into the claims.

Instead, they got a request for more time to fabricate collect evidence.

WATCH: “If it’s not true, just tell me it’s not true. Why is it taking so long to get the answer?” @LindseyGrahamSC on wiretapping story pic.twitter.com/Mv6RjcppGH

— TODAY (@TODAYshow) March 15, 2017

The hearings will begin on Monday, March 20, and will encompass both the probe into potential Russian involvement in the 2016 election, as well as the wiretapping claim.