Rep. Tim Burchett of Tennessee said on a right-wing podcast in December that blackmail would explain some of his colleagues’ votes.

One of the more colorful conservative members of the U.S. House told HuffPost he stands by recent remarks in which he said some of his fellow members were likely victims of blackmail.

But Rep. Tim Burchett (R-Tenn.), who made the comments on a Dec. 21 podcast with a right-wing commentator, declined to elaborate on who he was talking about or give any other details.

“You as a member of the media understand confidentiality, and I appreciate that, and I am going to keep that confidential unless those people tell me otherwise,” Burchett told HuffPost on Thursday.

Asked if he was standing by his comments, Burchett said, “Sure. I’m not going to back up.”

And when asked if he believed there were House members who had decided how to vote based on compromising material about them held by foreign powers, Burchett said, “Absolutely. And other powers. It doesn’t have to be foreign powers.”