Numerous Republican lawmakers who railed against then-candidate Donald Trump became his most loyal subjects after he ascended to the Presidency in an upset victory.

Few, however, have taken a more radical ideological shift than Senator Lindsey Graham (R-SC), who said during the campaign that Donald Trump would corrupt the soul of the United States. He's now, famously, one of Trump's most devoted servants—especially throughout the ongoing impeachment inquiry against President Donald Trump.

On Thursday, Graham launched a probe to find out if Vice President Joe Biden used his position to stifle investigations into the Ukrainian gas company his son worked for, despite numerous diplomats testifying that they knew Biden to be an upstanding Vice President.

Just a few years earlier, Graham thought the same thing.

Watch below.

Graham said:

"If you can't admire Joe Biden as a person there's probably—you got a problem and you need to do some self-evaluation because what's not to like?"

He got choked up as he talked about Biden's loss of his son and other immediate family members.

"I called him after Beau died and he basically said, well, Beau was my soul. We talked for a long time...He came to my ceremony and said some of the most incredibly heartfelt things that anybody could ever say to me. And he's the nicest person I think I've ever met in politics. He is as good a man as God ever created."

The 2016 video was shared by the recently created Twitter parody account "Lindsey Graham's conscience."

Those who watched it had ample feelings regarding Graham's conscience.

How far he's fallen.