Transcript for Trump's demand for a border wall likely to stretch gov shutdown into the new year

That market downturn comes amid a backdrop of yet another partial government shutdown, triggered by an impasse on capitol hill that could stretch into the new year. President trump tweeting today that he's, quote, all alone in the white house, waiting for Democrats to come back with a budget lead. ABC's white house correspondent Tara Palmeri has more. Reporter: Tonight, president trump posting an image at work in the oval office, but still stewing about the shutout, betweening, "I am all alone (poor me) In the white house waiting for the Democrats to come back and make a deal on desperately needed border security." The president's demand for a border wall will likely drag the shutdown past new year's. This is what Washington looks like when you have a president who refuses to sort of go along to get along. Reporter: President trump adding to the confusion with another tweet about where the money will come from. "The complete wall will be built with shutdown money plus funds already in hand." But congressional approval is required to reallocate any funds. Today, democratic leaders Pelosi and Schumer saying that the president is, quote, plunging the country into chaos. President trump has been on a destructive two week temper tantrum, demanding the American taxpayer to pony up for an expensive and ineffective border wall. Reporter: The white house has backed off its demand for $5 billion in border funding. But Schumer and the Democrats won't budge above $1.3 billion. This is about politics. It's about hating trump and it's not about America. Reporter: Tonight, president trump also fighting a battle against one of his exiled generals, secretary of defense Jim Mattis, after moving his exit date up to January 1st. He's now directly attacking Mattis for favoring subsidies for foreign militaries, tweeting, "General Mattis did not see this as a problem. I do. And it is being fixed!" Mattis resigned in response to the president's call to pull all troops from Syria in the fight against ISIS. Now we've won. It's time to come back. Reporter: Mattis writing a scathing resignation letter saying, quote, we ct protect our interests without maintaining strong alliances." The president praised Mattis at first, but sources tell ABC news he grew more angry after sharp criticisms from his own party, criticisms that persist. I'm devastated by this. And I think that what Mattis did was very important for our country. Reporter: When Democrats gain the majority on January 3rd, they will vote on a bill to reopen the government, but it won't include funding for the wall. And then, they'll pressure senate Republicans to do the same, but the president can still veto that bill and the government can remain shut down. Tom? Tara Palmeri, thank you. We want to head overseas

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