Rep. Buddy Carter, R-Ga., said Wednesday he is frustrated with the Senate's inability to pass a bill repealing and replacing Obamacare and said someone needs to "snatch a knot in their ass."

"Somebody needs to go over there to that Senate and snatch a knot in their ass," Carter told MSNBC, when asked for his response to President Trump's comments about Sen. Lisa Murkowski, R-Alaska. The phrase is apparently a reference to hitting someone.

Trump criticized Murkowski on his Twitter account Wednesday morning after she and Sen. Susan Collins, R-Maine, were the only two Republicans to vote against the motion to proceed to debate on the healthcare bill Tuesday afternoon.

"Senator @lisamurkowski of the Great State of Alaska really let the Republicans, and our country, down yesterday. Too bad!" Trump said.

Carter told MSNBC the president's comment about Murkowski were "perfectly fair," and said he is frustrated by the Senate's failure to pass a bill overhauling the healthcare system.

"It has gotten to the point where how can you say I voted for this last year, but I'm not going to vote for it this year?" the Georgia Republican said, referencing a 2015 bill repealing major provisions of Obamacare that passed both chambers of Congress in 2015.

"This is extremely frustrating for those of us who have put so much into this effort," he said.