House Oversight and Government Reform Committee Chairman James Comer, R-Ky., on Sunday ripped Senate Republicans for failing to advance the SAVE America Act, intensifying pressure on GOP lawmakers as President Donald Trump's election integrity legislation remains stalled in the upper chamber.

During an appearance on Fox News' "The Big Weekend Show," Comer questioned why Republican senators have not united behind legislation requiring proof of citizenship and voter identification for federal elections.

"Are you that weak? That's my question to any Republican senator: Are you that weak, to where if you vote for a valid ID to be shown to vote, you're gonna get beat in your home state?" Comer said.

"I mean, if you're that weak, you don't need to be a United States senator," he added.

Comer said he and his fellow House Republicans have received little information from Senate leaders about the legislation's future.

"All that I'm hearing from the Senate leadership is that they don't have the votes," Comer said, unless Senate Majority Leader John Thune, R-S.D., is "talking exclusively" with House Speaker Mike Johnson, R-La.

"Not only do they don't have 60 votes, they don't have 50 votes — which I don't believe that," Comer added, referring to the possibility of changing Senate rules to let the bill pass with a simple majority, an option Trump has urged Republicans to consider.

The SAVE America Act would require documentary proof of U.S. citizenship to register to vote in federal elections and establish nationwide voter identification requirements.

Republicans argue the legislation would strengthen election integrity by ensuring only eligible citizens vote in federal elections.

Democrats and voting-rights organizations have argued the measure would create new barriers for eligible voters by requiring documents many Americans do not readily possess.

The legislation has become a major source of tension within the Republican conference. Despite passing the House three times, the bill has repeatedly stalled in the Senate, where Republicans hold 53 seats but ordinarily need 60 votes to overcome a filibuster.

Sen. Thom Tillis, R-N.C., has emerged as one of the Republican skeptics of the proposal, questioning whether states could implement the new requirements without additional federal resources.

"It's become a joke in my mind for somebody that's actually implemented voter ID law, how anybody can look the American voters in the eye and suggest that it could be implemented in time without just causing a huge impact on the elections and ironically undermine the confidence of it," Tillis said, adding the bill was "dead" in his eyes.

House Republicans, however, are preparing another attempt to move the legislation.

Johnson said Sunday the House intends to pass the SAVE America Act "one more time" by incorporating it into a new budget reconciliation package, a strategy designed to avoid the Senate's 60-vote threshold if the proposal can be structured to comply with reconciliation rules.

Johnson called election integrity a top priority for both House Republicans and Trump and said he believes a broader package could unite Senate Republicans.

Comer said he hopes Senate Republicans ultimately rally behind the legislation.

"I hope that the Senate will get it together and figure out something that we can pass to give the American people confidence in the integrity of the elections," he said.

The bill has also fueled internal House disputes in recent weeks, with conservative Republicans delaying unrelated legislation while demanding that GOP leaders prioritize the SAVE America Act before Congress moves on to other legislative business.