The GOP has clear momentum on this issue, leading some conservatives to call for steps that go further than the House-approved bill.

They want language in the omnibus that blocks any funds from being used to relocate refugees from the region, at least until stricter screening conditions are met.

Rep. Brian Babin (R-Texas) has 57 signatures on a letter urging Ryan and House Appropriations Committee Chairman Hal Rogers (R-Ala.) to bar funds for Syrian refugee relocation, calling it a “Trojan Horse threat to American national security.”

Yet there are risks for Republicans, if the White House and Democrats can use the issue to accuse the GOP of forcing a shutdown.

Ryan sought to steer the issue away from the spending bill by moving a stand-alone bill last week. It’s a sign the new Speaker sees a potential political threat to his own party.