House Republicans on Tuesday took a key vote to advance a $70bn bill funding the agencies leading Donald Trump’s crackdown on undocumented immigrants through the duration of his term, which would end a months-long standoff with Democrats that at one point forced the Department of Homeland Security (DHS) to shutter.

The Secure America Act, which passed the Senate last week, allocates $38bn to Immigration and Customs Enforcement (ICE), $26bn to Customs and Border Protection (CBP) and $5bn more to the Department of Homeland Security (DHS) through September 2029.

In a 213-211 party-line vote, the House of Representatives agreed on Tuesday to begin debate on the measure, setting up a vote on passage later in the afternoon. Should it pass, it will require Trump’s signature to take effect.

The measure would end a blockade of funding for the agencies that Democrats announced in January after federal agents killed two US citizens in Minneapolis amid a crackdown on undocumented immigrants. Their boycott halted passage of a measure that authorized spending by DHS, forcing it to shut down for 75 days from mid-February.

The department reopened in April after Democrats agreed to support legislation that paid for all of its operations excluding ICE and CBP, while Republicans then moved to approve funding for those agencies through the duration of Trump’s presidency, saying it was necessary to prevent Democrats from shutting down DHS again.

House Democrats unanimously opposed the bill, with Hakeem Jeffries, the minority leader, telling reporters on Monday that the party’s lawmakers “will be a hard no on the reckless Republican budget reconciliation bill this week.”

Despite a historically small House majority, Republican speaker Mike Johnson was able to corral his conference to pass the rule that teed up debate on the measure, without suffering a single defection.

There may nonetheless be surprises awaiting the bill ahead of the vote for passage. Congressional Republicans remain concerned by Trump’s plan for a nearly $1.8bn “anti-weaponization” fund that would pay out his allies.

The acting attorney general, Todd Blanche, told a House committee last week that the proposal was dead, but the president refused to rule out its creation in an interview broadcast on Sunday.

As the bill was being considered by the Senate last week, a small group of Republicans sought to find bipartisan compromise on an amendment that would bar the fund, without success.

The legislation was also delayed by uproar over an attempt to include $1bn for security improvements related to the ballroom Trump is building at the White House. Senate Republicans eventually agreed to remove those funds, after the chamber’s parliamentarian ruled it could not be included if the measure was to pass using the budget reconciliation procedure to circumvent the Democratic filibuster.