About 800,000 federal workers missed their pay for the first time Friday.
Nearly half of the State Department employees in the USA and about one-quarter overseas have been furloughed during the shutdown.
At least one major airport has had to temporarily shutter a concourse because of staffing issues related to the shutdown.
Negotiations between the President and congressional leaders have stalled as neither side seems willing to budge on funding for a wall along the border with Mexico. Earlier, Trump backed away from threats to declare a national emergency and build the wall with money appropriated from military, water management and disaster management funds, among other sources. "If you think of some of the things they say and do, it's just kind of fantastic".
"I would hate to see it".
Many lawmakers spent the weekend in their home states - often hearing constituents' complaints about the shutdown - but will return to Washington on Monday. He said the president had accepted a border security package that included money for a wall, then changed his mind.
The shutdown became the longest on record at midnight Friday (0500 GMT Saturday), when it overtook a 21-day stretch in 1995-1996 under president Bill Clinton. That ended when congressional Republicans agreed to a short-term funding bill for closed agencies that was later extended.
Former White House communications director Anthony Scaramucci told the West Block's Mercedes Stephenson that the three-week shutdown is a grudge match symbolizing the bigger ideological fight between Republicans and Democrats, but warned the country will face serious economic harm if it doesn't end soon. He said that the ball was in the court of his political opponents, warning that "we will be out for a long time unless the Democrats come back from their "vacations" and get back to work".
"We need to look at the facts", she said.
"If we can't (get a deal) at the end of three weeks, all bets are off", Graham told "Fox News Sunday".
The White House also was eyeing military construction money, another politically hard choice because it would take away from a backlog of hundreds of projects.
"I do think if we reopen the government, if the president ends this shutdown crisis, we have folks who can negotiate a responsible, modern investment in technology that will actually make us safer", Coons said.
He was one of 19 law enforcers, faith leaders and elected officials invited to a White House meeting Friday to discuss border security with President Donald Trump, who took the opportunity to attack Democratic refusal to fund a wall.
The New York Times said it was not clear if the investigation to determine whether Mr Trump was deliberately working for Russian Federation or had unintentionally been influenced by Moscow was still being pursued. However, two-thirds of Republicans would support the president's decision to use those powers.
Radha Muthiah, head of Capital Area Food Bank, said dozens of volunteers were working to pack bags of food for affected staff. He says illegal drugs are pouring into the United States from Mexico, even though security experts say most come through legal ports of entry.
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