On Twitter on Wednesday (Thursday NZT), Trump appeared to respond to criticism that he was backing down, insisting that "One way or the other, we will win on the Wall!".
White House officials were in a meeting discussing border security last August when a sudden outburst from aide Stephen Miller silenced the room.
Rep. Jodey Arrington (R-Texas) discusses how Congress is looking to avoid a partial government shutdown, as Democrats fight with President Trump over border wall funding. Congress needs to agree on the measure by Friday at midnight, or parts of the government will shut down.
Senate Democratic Leader Chuck Schumer labeled that a "slush fund" that would lack the votes to pass Congress.
"In our Country, so much money has been poured down the drain, for so many years, but when it comes to Border Security and the Military, the Democrats fight to the deat", he wrote.
Sanders added that there are "a number of different funding sources that we've identified that we can use that we can couple with the money that would be given through congressional appropriations that would help us get to that $5 billion that the president needs in order to protect our borders".
The stopgap measure would approve government funding at existing levels for the next several weeks, without a boost for the border. It would provide money to keep the government running to February 8.
And Trump has publicly embraced the idea of shutting down the government if he doesn't get funding for the border wall, declaring in front of cameras in the Oval Office that he would be "proud" to do so.
Will Trump shut down government over border wall
Democrats and many Republicans have challenged the wisdom of giving Trump $5 billion this year to build a wall - which carries an estimated $24 billion price tag - that they argue would be less effective in securing the border than building on a mix of tools already in place.
The Senate's top Republican and Democratic leaders began negotiating new proposals, and talks were expected to continue.
Despite his willingness for a shutdown fight over border security prior to the midterm elections, Trump conceded to Republicans leaders House Speaker Paul Ryan and Senate Majority Leader Mitch McConnell who wanted to postpone the fight until after the election. "That's not going to pay for the wall".
"On the fence, it's not a fence, it's a wall", Trump said.
At issue in the standoff is money for nine of 15 Cabinet-level departments and dozens of agencies, including the departments of Homeland Security, Transportation, Interior, Agriculture, State and Justice, as well as national parks and forests.
On Tuesday, Sanders told Fox News the White House has determined it has "other ways to get to that $5 billion".
"Who would want to shut the government down?" he said.
Wyoming Sen. John Barrasso, the No. 3 Republican in the Senate, said Republicans remain hopeful they can come up with a proposal that can be acceptable to Trump and pass both chambers.