Updated at 1:52 p.m. ET
House Speaker Paul Ryan, R-Wis., says President Trump "will not sign" a Senate-approved plan to temporarily fund government agencies, increasing the chances the government will partially shutdown on Friday night.
Emerging from a White House meeting, Ryan reported, "The president said he will not sign this bill."
House Majority Leader Kevin McCarthy, R-Calif., said Trump believes the Senate-approved measure, which would fund nine government agencies until early February, "is just kicking the can down the road." He said there was still time to add additional border security provisions to the legislation.
Republican leaders could still pass the short-term spending bill, daring the president to issue a veto.
Louisiana GOP Rep. Steve Scalise, the No. 3 Republican leader, told reporters after he and other leaders returned from the White House that the new plan would be to introduce an amendment to the Senate passed measure that provided $5 billion for border security and disaster relief and vote on both on Thursday.
"I would imagine that we would keep the bill as it stands and then add an amendment to put $5 billion plus the supplemental disaster relief," Scalise said. "It would have the tools the president needs to keep America safe."
Adding the border wall and disaster money as an amendment means the House would vote on those to elements separately — if the amendment fails the short- term spending bill could still pass without the wall money.
It would then be up to Trump to decide how to handle it.
There are serious questions about whether Republicans have enough votes to pass the wall money in the House. The issue is so divisive that GOP leaders have avoided scheduling stand-alone votes on that funding to avoid a potentially embarrassing failure to pass one of Trump's biggest demands. But after today's White House meeting they were left with little choice with the president's refusal to accept a stopgap measure without the money.
House Republicans face an even greater challenge this week with more than a dozen GOP members absent from the most recent vote.
White House press secretary Sarah Huckabee Sanders issued this statement after the meeting:
"President Trump just met with Republican Members of the House. Not surprisingly, they all feel strongly about Border Security — stopping the flow of drugs, stopping human trafficking, and stopping terrorism. We protect nations all over the world, but Democrats are unwilling to protect our nation. We urgently need funding for border security and that includes a wall."
Plans for a speedy vote on a short-term spending bill crumbled ahead of a Friday night deadline as some House Republicans threatened to pull their support for any spending measure that does not include additional border security money.
House GOP leaders struggled to convince members to support a bill to extend current spending levels through Feb. 8. Many are concerned that Republicans will not have another chance to fulfill Trump's demand for $5 billion to build a wall on the border with Mexico. The Senate approved the measure Wednesday night.
Conservatives such as Rep. Mo Brooks, R-Ala., say voting on the short-term spending bill without border wall money amounts to a surrender on one of Trump's signature campaign promises. Brooks said he is confident that the House could uphold a veto — if a spending bill does pass and Trump refuses to sign it. But Brooks, like most Republicans, said they have no clear sign from Trump about what he's willing to support.
"That is the $5 billion question," Brooks said. "I wish we had clarity on that, that would help us decide what to do."
Trump tweeted Thursday morning that Democrats know "Steel Slats (Wall) are necessary for Border Security" and are "putting politics over Country" by refusing to fund the wall. He also threatened "not to sign any of their legislation, including infrastructure, unless it has perfect Border Security."
In a tweet later in the morning, Trump said he was "promised the Wall and Border Security" by congressional leadership when he signed a spending package last year and that "it didn't happen!"
Frustration with the spending bill extends beyond a core group of conservatives who typically oppose spending bills. Some reliable leadership allies, such as Rep. Steve Womack, R-Ark., also expressed concerns about the spending bill.
"This is a different circumstance. We're about to lose the majority and we've made promises that haven't been kept," Womack said. "If we aren't willing to fight now on the way out of the majority, then when are we willing to fight?"
Republican leaders had hoped to easily approve the spending measure to avoid a last-minute panic over spending. Funding for about a quarter of the government will run out at midnight on Friday, and the government will be forced to partially close unless the spending measure is agreed to.
Support among House Republicans began to crack Wednesday night before the Senate vote even occurred.
Members of the House Freedom Caucus, some of the most conservative members of Congress, railed against the wall-less spending plan in a string of speeches on the House floor. The group's chairman, Rep. Mark Meadows, R-N.C., urged Trump to veto the spending measure, saying "We're going to back you up. If you veto this bill, we'll be there."
The frustration grew Thursday morning during a closed-door meeting of House Republicans. Members emerged confused about the plan for the spending bill, telling reporters that the entire plan for a vote expected later in the day was up in the air.
Ryan stepped out of a closed-door meeting of GOP House members to take a phone call from the president. As that call stretched on, leadership members decided to cancel a regularly scheduled press briefing ahead of the White House meeting.
The spending measure, also known as a continuing resolution or CR, would fund nine cabinet-level departments and several independent agencies through Feb. 8, when Congress would again be forced to confront the issue. But Democrats, who will control the House in the next Congress, have adamantly refused to provide money for a wall.
In a speech Wednesday, Senate Majority Leader Mitch McConnell, R-Ky., said he was "sorry that my Democratic colleagues couldn't put the partisanship aside and show the same good-faith flexibility that the president has shown in order to provide the resources our nation needs to secure the integrity of our borders as well as the safety of American families."
The temporary spending bill does include $1.3 billion for border security. House Minority Leader Nancy Pelosi, D-Calif., released a statement on Wednesday indicating she supports the stopgap bill, and it's likely most House Democrats will vote for the legislation.
Asked about the possible next steps after Thursday morning's developments, Pelosi told reporters she was reluctant to comment but then jabbed, saying we're in "the middle of a meltdown on the part of Republicans."
A presidential veto would mean that hundreds of thousands of federal employees including Border Patrol, FBI and DEA agents and TSA officers would continue to work over the Christmas holiday but without pay, while hundreds of thousands of other federal workers would be furloughed.