WASHINGTON D.C. — The U.S. Senate passed a resolution in a late-night voting session to fund Immigration and Customs Enforcement and Customs and Border Protection through the end of President Donald Trump's term, using a procedural maneuver that did not require support from Democrats. The measure passed by a vote of 50 to 48.

Two Senate Republicans who frequently break with the Trump administration joined Democrats in voting against the resolution. Two senators, one Democrat and one Republican, did not vote.

The voting session continued until about 03:30 local time (07:30 GMT) as Democrats tabled a series of amendments in a process known as a "vote-a-rama." Earlier, the Senate had passed a separate measure to fund the rest of the Department of Homeland Security, of which ICE and CBP are a part.

Democrats have been refusing to fund ICE and CBP unless the agencies are reformed following two deadly shootings by their operatives in Minnesota. Federal agents shot dead Alex Pretti and Renee Good during immigration raids in Minnesota in January. Trump has said he wants a budget package on his desk for signature by 1 June.

The Department of Homeland Security has gone without funding since a shutdown began on 14 February. The shutdown is the longest ever shutdown of part of the U.S. government. In March, airports experienced chaotic conditions at security checkpoints due to a shortage of security officers resulting from the DHS funding impasse. Hundreds of security officers employed by DHS either quit their jobs or did not show up for work, and airport security queues reached car parks.

Trump signed an executive order requiring DHS to use existing funds to pay security officers. Homeland Security Secretary Mark Mullin said his department would run out of money to pay employees' salaries in the first week of May.