The White House has released photographs showing President Donald Trump apparently working hard over the weekend in a bid to avert the impending government shutdown.
The president spent his inauguration anniversary at his desk rather than partying with supporters at a planned Mar a Lago celebration as he struggled to make headway on resolving the crisis.
A second senate vote on the spending bill has been scheduled for 1am (6am GMT) Monday as the government shutdown enters the working week.
But as the deadline loomed, it seemed the two sides were at an impasse over the question of the Deferred Action for Childhood Arrivals policy.
Democrats insist a provision to protect the dreamers, those who were brought to the country illegally as children by their parents, is included. The Republicans say they will negotiate that once the government is up and running again.
On Sunday morning, the president tweeted:
Great to see how hard Republicans are fighting for our Military and Safety at the Border. The Dems just want illegal immigrants to pour into our nation unchecked. If stalemate continues, Republicans should go to 51% (Nuclear Option) and vote on real, long term budget, no C.R.’s!
— Donald J. Trump (@realDonaldTrump) January 21, 2018
The photographs, released on Saturday, show the president walking along the West Wing Colonnade from his residence to the Oval Office where he remained behind close doors for much of the day.
Another captured a steely-faced Mr Trump holding a phone to his ear receiving updates from Capitol Hill while wearing a Make America Great Again baseball hat.
And a third picture had him surrounded by smiling senior staff including his daughter Ivanka, son in law Jared Kushner, communications director Hope Hicks and press secretary Sarah Huckabee Sanders.
He had been expected to attend the glitzy $100,000 a head event at his Palm Beach, Florida residence on Saturday night which went ahead in his absence.
Instead, he relayed a video message in which he blamed the Democrats for his no-show, according to US media sources.