Trump-backed spending bill fails to pass, leaving U.S. government shutdown a looming possibility

A spending bill backed by Donald Trump failed in the U.S. House of Representatives on Thursday as dozens of Republicans defied the U.S. president-elect, leaving Congress with no clear plan to avert a fast-approaching government shutdown that could disrupt Christmas travel.

The vote laid bare fault lines in Trump's Republican Party that could surface again next year when its members gain control of the White House and both chambers of Congress.

Trump had pressured lawmakers to tie up loose ends before he takes office on Jan. 20, but members of the party's right flank refused to support a package that would increase spending and clear the way for a plan that would add trillions more to the federal government's $36 trillion US in debt.

"I am absolutely sickened by a party that campaigns on fiscal responsibility and has the temerity to go to the American people and say you think this is fiscally responsible," said Republican Rep. Chip Roy, one of 38 Republicans who voted against the bill.

The package failed by a vote of 174-235 just hours after it was hastily assembled by Republican leaders seeking to comply with Trump's demands. A prior bipartisan deal was scuttled after Trump and the world's richest person Elon Musk came out against it on Wednesday.

House Speaker Mike Johnson provided no details when reporters asked him about next steps after the failed vote.

"We will come up with another solution," he said.

Government funding is due to expire at midnight on Friday. If lawmakers fail to extend that deadline, the U.S. government will begin a partial shutdown that would interrupt funding for everything from border enforcement to national parks and cut off paycheques for more than two million federal workers.

The U.S. Transportation Security Administration warned that travellers during the busy holiday season could face long lines at airports.

The bill that failed on Thursday largely resembled the earlier version that Musk and Trump had blasted as a wasteful giveaway to Democrats. It would have extended government funding into March and provided $100 billion US in disaster relief and suspended the debt. Republicans dropped other elements that had been included in the original package, such as a pay raise for lawmakers and new rules for pharmacy benefit managers.

At Trump's urging, the new version also would have suspended limits on the national debt for two years — a manoeuvre that would make it easier to pass the dramatic tax cuts he has promised.

Before the vote, Johnson told reporters that the package would avoid disruption, tie up loose ends and make it easier for lawmakers to cut spending by hundreds of billions of dollars when Trump takes office next year.

"Government is too big, it does too many things, and it does few things well," he said.

Democrats blasted the bill as a cover for a budget-busting tax cut that would largely benefit wealthy backers such as Musk, while saddling the country with trillions of dollars in additional debt.