WASHINGTON (AP) — Senate Republicans cleared the first hurdle on Thursday as they are struggling to pass legislation to fund President Donald Trump’s immigration enforcement agencies, narrowly beating back a Democratic effort to permanently block Trump from creating a $1.776 billion settlement fund for payouts to allies who claim they were persecuted by the government.

Republicans still face a gauntlet of Democratic amendments before the bill can advance, setting up a daylong test of party unity. More votes on the settlement fund are planned, including proposals from Republicans, and it was unclear if GOP leaders would be able to fend them all off and pass the legislation.

“I can’t predict how it comes out,” Senate Majority Leader John Thune told reporters between discussions with some of the holdouts off the Senate floor.

Senate Minority Leader Chuck Schumer said that Democrats plan to force votes on the tax immunity granted to Trump as part of the settlement and a host of other issues — including Trump’s East Wing ballroom project, his tariffs, his war with Iran and his immigration enforcement campaign.

“Amendment after amendment, vote after vote, Republicans are going to have to answer to the American people,” Schumer said.

Settlement fund roils Senate GOP conference

Acting Attorney General Todd Blanche said this week that the fund would not move forward, and many GOP senators said Wednesday that they were satisfied with his remarks.

Yet Trump, who has been at odds with Senate Republicans in recent weeks, raised new doubts about the settlement’s future on Wednesday afternoon — just after the Senate had voted to start debate on the immigration bill — when he told reporters that the settlement is “very important” and said “I don’t know” whether it is dead or on hold.

“I’d have to ask the lawyers,” he said.

Republican Sens. Bill Cassidy of Louisiana, John Husted of Ohio and Dan Sullivan of Alaska held out for around three hours on the Democratic amendment banning the settlement amid discussions over whether to vote for it.

Cassidy, who eventually voted against the amendment, lost re-election in a GOP primary two weeks ago after Trump endorsed his opponent. Husted and Sullivan, who voted against it, are both up for re-election in November.

Senators then defeated a second amendment from Republican Sen. Thom Tillis of North Carolina that would also ban the settlement fund but would move the money to a separate anti-fraud fund at the Department of Justice. Most Democrats voted against the amendment, guaranteeing its defeat, but more than 10 Republicans supported it.

“If Blanche says this is largely inoperative, why not use this moment to codify that?” Tillis said ahead of the vote. “Otherwise, you’re exposing every one of our members who are in cycle to having to deal with this between today and Election Day, and that makes no sense for something that the DOJ says they’re not moving forward with.”

It was unclear how Republicans would vote on additional amendments.