The White House blasted congressional Democratic leaders on Tuesday for bailing on a budget meeting with President Trump, accusing them of "political grandstanding" when the government has several "urgent issues" to address.

"The president's invitation to the Democratic leaders still stands and he encourages them to put aside their pettiness, stop the political grandstanding, show up and get to work," press secretary Sarah Sanders said in a statement.

Senate Minority Leader Chuck Schumer, D-N.Y., and House Minority Leader Nancy Pelosi, D-Calif., pulled out of a meeting with Trump and their Republican counterparts after the president said he was not prepared to cut a deal with Democrats as part of the upcoming spending bill.

"I don't see a deal!" Trump had tweeted early Tuesday, claiming that "Chuck and Nancy... want illegal immigrants flooding into our Country unchecked [and] want to substantially RAISE taxes."

Sanders said it was "disappointing" that Schumer and Pelosi "are refusing to come to the table and discuss urgent issues."

"The meeting will proceed as scheduled with Speaker Ryan, Leader McConnell and administration officials who are committed to getting things done. If the Democrats believe the American people deserve action on these critical year-end issues as we do, they should attend," she said.

Congress has until Dec. 8 to pass a short-term spending bill before the government runs out of money. Senate Republicans will need at least eight Democrats to vote for the legislation in order to ensure passage, meaning both parties will have to make some concessions.

The White House has demanded an increase in defense spending caps and opposed the inclusion of a legislative fix for so-called Dreamers, while Democrats have called for a boost in non-defense spending.