US President Donald Trump has signed a $1.3tn (£921bn) package to fund the government until September, vowing never to enact such a bill again.
Hours earlier, the president threatened to veto the bill over its lack of full funding for his border wall.
Congress passed the measure to avert what would have been the third shutdown of the US government this year.
But many of the president’s fellow Republicans railed against the measure, one calling it “monstrous”.
The spending bill needed Mr Trump’s signature by a Friday midnight deadline to keep the federal agencies operating.
The president had raised concerns about the package, which keeps the government funded until 30 September, in a Friday morning tweet.
But in a restricted-access news conference in the afternoon he said that despite the “ridiculous” process of passing the measure he would sign it because of its large increase in military spending.
“There’s a lot of things I’m unhappy about in this bill,” he said, even though it was cleared by a Congress controlled by his own party.
He added: “I will never sign a bill like this again – nobody read it.”
Mr Trump also told reporters: “I looked very seriously at the veto, but because of the incredible gains we’ve been able to make for the military that over-rode any of our thinking.”
The vote in the Senate early on Friday caps weeks of haggling over a number of key issues dividing lawmakers.
What about the Dreamers?
The bill does not address the fate of young immigrants brought illegally to the US by their parents, a group who were protected by the Deferred Action for Childhood Arrivals (Daca) programme until President Trump ended it in September.
The Daca programme had protected roughly 700,000 immigrants known as “Dreamers”. A deal on Daca was not included in the spending bill because Republicans and Democrats could not agree a trade-off.
The White House and Republicans offered Democrats a two-and-a-half or three-year Daca extension in return for including the $25bn that Mr Trump wanted for the wall, reports say.
Democrats are reported to have said they would accept that, but only if a path to citizenship was created for all the 1.8 million people eligible for Daca.
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The White House rejected this and came back with another proposal, but ultimately nothing was agreed.
In Friday’s news conference, Mr Trump said: “I do want the Hispanic community to know that Republicans are much more on your side than the Democrats who are using you for this purpose.
“The Democrats did not want Daca in this bill.”
The wall
President Trump said he was “not happy” with the amount allocated to construct his planned wall on the US-Mexico border.
“But it does start the wall and we will make that $1.6bn go very far,” he said on Friday.
It was far short of the $25bn the White House had sought – and there are strings attached to the funding Congress has approved.
Most of it can only be used to repair stretches of the 1,900 mile (3,100km) border where there already is a wall, according to the Washington Post.
Under the bill, just 33 miles of new barriers can be built and only using “bollard” fencing or levees, not the concrete prototypes Mr Trump has viewed in photo ops, reports the newspaper.
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Trump outmaneuvered
Analysis: Anthony Zurcher – BBC Washington
Donald Trump stepped up to the podium on Friday and had to walk a fine line.
He had threatened to veto the omnibus spending bill, but now he was going to sign it. He thought it was an awful bill, but it had some good parts. He said it spent way too much money, but then went through all the billions of taxpayer dollars it allocated to things he liked.
Ships! Planes! Nuclear missiles! Opioid treatment! Border security! It at times sounded like he was checking his way through an extremely high-priced shopping list.
The president warned that he would never sign a bill like this again – and that could be unintentionally true. If Democrats do well in November’s midterm election, the next spending bill Congress turns out could look very different than the one produced by this Republican-controlled House and Senate.
The bottom line is Trump took the stage and essentially admitted he had been outmaneuvered – by Democrats and some members of his own party. He was elected to change the system, but he had to acknowledge that “that’s the way right now the system works.”
That had to be a tough thing to say.
What has reaction been?
House Democratic leader Nancy Pelosi cheered the bill on Thursday as “a tremendous victory for the American people”.
“If you want to think you’re getting a wall, just think it and sign the bill,” she said, in a remark aimed at Mr Trump’s Republican supporters in Congress.
But despite cross-party support, at least 90 conservative Republicans voted against it, calling the budget government spending run amok.
Representative Mark Meadows, head of the hardline House Freedom Caucus, told Mr Trump that he would have the support of the group,
Republican Senator Bob Corker tweeted that he would bring Mr Trump a pen to sign the veto.
Fellow Republican Rand Paul, who briefly shut down the government earlier this year by rejecting a bill, agreed Mr Trump “should veto this sad excuse for legislation”.
He also argued lawmakers were not allowed enough time to read it.
