President Trump will host congressional leaders in the Situation Room for a 3 p.m. ET briefing on border security, according to the White House.

What's at stake: The meeting comes as negotiations to re-open about a quarter of the federal government have been frozen for nearly two weeks, and just one day before Democrats take over as the majority party in the House. Compromise proposals, to the extent they existed in the first place, have not been traded or even discussed in recent days as both sides settled into their respective positions.

Who's likely to attend: A Hill source familiar with the meeting said few details are known about this homeland security briefing, including who will lead it, what else is on the agenda or who else will attend. The invited congressional leaders include Senate Majority Leader Mitch McConnell, Senate Republican Conference Chair John Thune, Senate Minority Leader Chuck Schumer, Senate Minority Whip Dick Durbin, presumptive incoming House Speaker Nancy Pelosi, incoming House Majority Leader Steny Hoyer, incoming House Minority Leader Kevin McCarthy and incoming House Minority Whip Steve Scalise, the source said.