Rep. Thomas Massie (R-Ky.) detailed threats against him on Wednesday after saying House Republicans are facing an “immense pressure campaign” from the White House to not join him in forcing a vote to release the publicly unread Jeffrey Epstein files.

“What do those threats look like? What kind of pressure campaign are we talking about here?” CNN’s Kaitlan Collins asked after Massie helped organize a gathering of Epstein victims at the Capitol earlier.

“Well, I’m feeling it myself in my own district. There’s been $2.5 million of ads run against me by three billionaires who are mega donors to the Republican Party, and one of them is actually, I’m not going to say on Epstein’s list, but he’s in Epstein’s black book. So I’ve taken the brunt of that myself. I think what’s being run against me is a threat to other Republicans to try to keep them from doing what I’m doing,” he replied.

“And are you worried that it’s going to be successful here?” Collins followed.

“Well, you know, I’ve opposed the president before, and he said I should be thrown out of the GOP,” Massie replied. “And in that race, I got 81% of the vote. So in some sense, I have the Trump antibodies, but I’m definitely going to get a booster shot here.”