At the stroke of midnight Saturday, the partial government shutdown entered its 22nd day and became the longest in U.S. history.

The showdown between President Trump and Democrats, which began Dec. 22 over funding for Trump’s proposed border wall, has led to employee furloughs and some having to work without pay.

As some 800,000 federal workers received blank pay statements Friday, Congress voted to guarantee them back pay whenever the shutdown is resolved -- and then lawmakers adjourned for the weekend.

SHUTDOWN FALLOUT INTENSIFIES AS FEDERAL WORKERS MISS FIRST PAYCHECKS

The missing paychecks have put pressure on lawmakers and Trump to end the impasse. Some workers posted photos of empty pay stubs on Twitter and vented their frustration.

“I saw the zeros in my pay stub today, and it’s a combination of reality setting in and just sadness,” air traffic controller Josh Maria told the Associated Press.

Trump has floated the possibility of declaring a national emergency to bypass Congress to fund the wall but has walked back his stance in recent days. The White House has also explored diverting money for border wall construction from other accounts, including some of the $13.9 billion allocated to the Army Corps of Engineers.

REP. BIGGS: TRUMP SHOULD STAND FIRM TO FIGHT FOR THE BORDER WALL

"What we're not looking to do right now is national emergency," Trump said. He insisted that he had the authority to do that, adding that he's "not going to do it so fast" because he'd still prefer to work a deal with Congress.

That has led to an outcry from officials in Puerto Rico and some states recovering from natural disasters.

“It’s going to p--- off a lot of members,” Rep. Mike Simpson, R-Idaho, a senior member of the House Appropriations Committee, told the Wall Street Journal.

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Some Republicans are pushing for Trump to declare a national emergency.

“Mr. President, Declare a national emergency NOW,” U.S. Sen. Lindsey Graham of South Carolina said on Twitter on Friday. “Build a wall NOW.”

House Speaker Nancy Pelosi accused Trump of using the shutdown to divert attention from Special Counsel Robert Mueller’s Russia investigation.

BILA: 'REALLY PATHETIC' FOR SOME DEMOCRATS TO MAKE BORDER WALL FUNDING DEBATE ABOUT RACE

"This isn't a wall between Mexico and the United States. This is a wall between his failures of his administration," Pelosi told reporters. "This is a big diversion, and he's a master of diversion."

The Associated Press contributed to this report.