Trump, Egged On by Musk, Condemns Spending Deal, Raising Fears of Government Shutdown

A bipartisan spending deal to avert a shutdown was on life support on Wednesday after President-elect Donald J. Trump condemned it, leaving lawmakers without a strategy to fund the government past a Friday night deadline.

Mr. Trump issued a scathing statement ordering Republicans not to support the sprawling bill, piling on to a barrage of criticism from Elon Musk, who spent Wednesday trashing the measure on social media and threatening any Republican who supported it with political ruin.

It was not yet clear how Speaker Mike Johnson planned to proceed as the package, which was stuffed full of unrelated policy measures as well as tens of billions of dollars in disaster and agricultural aid, appeared to be hemorrhaging support. Some Republicans suggested he was mulling stripping the bill of everything but the spending extension and putting it to a vote, but the fate of such a measure was also very much in doubt.

The blowback from Republicans to the agreement underscored the complications top G.O.P. leaders will have to manage next year when they control all of Congress and face a president with a penchant for blowing up political compromises. It also showed the power of a circle of influential outside players in Mr. Trump’s orbit who appeared willing to punish Republicans if they failed to accede to his wishes.

Even before Mr. Musk began making noise, a swell of Republican lawmakers — both ultraconservatives and some mainstream members — had been furious about the funding measure, which was rolled out on Tuesday night. It began as a simple spending bill to keep government funds flowing past a midnight deadline and into mid-March, but it emerged from bipartisan negotiations laden with $100 billion in disaster aid and dozens of other unrelated policies.