Negotiations over immigration, which largely has been tied to aid for Ukraine, Israel and Taiwan, had dragged on for four months but never really gained much traction among Republicans, who have said they want tougher border security measures than Democrats have proposed.

But then they got it this week in the bipartisan Emergency National Security Appropriations Act that would have allocated $118 billion to border security and aid for Ukraine and Israel. The idea was praised by Biden as the “toughest” and “fairest” law ever proposed. It also won the praise of Senate Majority Leader Chuck Schumer and Senate Republican Leader Mitch McConnell.

But Republicans began turning against that bill after U.S. House Speaker Mike Johnson called it dead on arrival. His comments came as former President Donald Trump began to loudly voice his ideas on the topic as part of his presidential campaign.

Given those developments, lawmakers abandoned a compromise effort this week when it was clear that the border security provisions did not go far enough for the GOP.

Senate Majority Leader Chuck Schumer, D-N.Y., criticized Senate Republicans over backing away from the border compromise idea before the vote on Wednesday, attributing the switch to opposition from former President Donald Trump.

“Why have Republicans backed off on border when they know it’s the right thing to do?” Schumer said on the floor Wednesday morning. “Two words: Donald Trump.”

In a Politico interview, Senate Minority Leader Mitch McConnell, R-Ky. said for Republicans to solve border problems they’ve identified, it requires working with Democrats who control the White House and the Senate.

“The reason we’ve been talking about the border is because they wanted to, the persistent critics,” McConnell said. “You can’t pass a bill without dealing with a Democratic president and a Democratic Senate.”

During the president’s flight to a campaign stop in New York on Wednesday, White House Press Secretary Karine Jean-Pierre criticized House Speaker Johnson and fellow Republicans for the recent failures to approve national-security measures and said there would be consequences because of it.

“So, because congressional Republicans are choosing partisan politics over our national security and refusing to pass the bipartisan national security agreement that includes significant border reforms and funding, over the coming weeks U.S. Immigration and Customs Enforcement will be forced to reduce operations because of budget shortfalls,” Jean-Pierre said.

“Speaker Johnson and congressional Republicans should be held accountable,” she said. “This was their choice. They have picked partisan politics over our national security.”