Arnie Seipel

Updated at 9:30 a.m. ET

President Trump is facing calls to act in the wake of the latest mass shooting, which killed 17 people Wednesday at a high school in Florida, and the White House is not ignoring them. The president will participate in a pair of listening sessions on school safety this week, and on Monday morning the White House said he supports efforts to improve the federal background check system, something Congress has expressed broad support for without acting on after past shootings.

While a lot of furious negotiation has been going on behind the scenes on Capitol Hill to end a partial government shutdown, to voters and cable news viewers it may look like most of the work in Washington is going into pointing fingers.

As the countdown to shutdown hit zero, an official White House statement called Democrats "obstructionist losers."

Democrats pointed to President Trump's inconsistent statements on immigration to say he's an unreliable negotiating partner.

Updated on Dec. 22 on 12:02 p.m. ET

Congressional Republicans delivered on their first major legislative accomplishment of the Trump era on Wednesday, when the House voted 224-201 to pass a $1.5 trillion tax package. The bill cuts individual rates for eight years and slashes the top corporate tax rate to 21 percent permanently.

Updated at 7:29 p.m. ET

In making his "closing argument" for tax legislation expected to get a vote in Congress next week, President Trump announced that the changes would take effect early next year.

Updated Dec. 2 at 11:57 a.m. ET

The Senate narrowly approved a $1.4 trillion tax overhaul early Saturday morning following a day of procedural delays and frustration.

The legislation, which would cut the top corporate tax rate to 20 percent and lower taxes for most individuals, narrowly passed in a vote of 51-49. Tennessee Republican Bob Corker was the only Republican to vote against the legislation, joining every Democrat and both independents in opposing the sweeping overhaul of the nation's tax laws.

Updated at 11:20 a.m. ET

Senate Republicans continued maneuvering to pass their overhaul of the nation's tax code on Friday, possibly working around concerns by stern deficit hawks after an official estimate on Thursday said that the economic growth spurred by the plan would still leave a $1 trillion hole in the deficit.

Senate Republicans have begun debate on their bill to overhaul the nation's tax code. Many GOP members sound hopeful about passing their tax bill, possibly in a matter of hours. But they aren't there yet. To pass, 50 of the 52 GOP senators need to support the legislation. As the bill is debated on the Senate floor Thursday, several amendments are expected to try and get their support.

Here's what to watch for:

ANWR Drilling

Updated at 4:12 p.m. ET

The Trump administration is putting North Korea back on the State Department's list of state sponsors of terrorism. President Trump says the move "supports our maximum pressure campaign to isolate this murderous regime."

President Trump told reporters on Monday that the Treasury Department will officially announce additional sanctions and penalties on the North Korean regime on Tuesday.

Updated at 4:30 p.m. ET

Republicans are facing even more uncertainty when it comes to finding the votes to pass a bill to repeal major parts of the Affordable Care Act, as familiar voices in divergent wings of the party show just how difficult it is for the GOP to unite on the issue of health care.

The Trump administration is updating its travel ban, just hours before it was set to expire. In a proclamation signed by President Trump on Sunday, the travel restrictions now include eight countries, a couple of which are not majority-Muslim, as had been the case with all the nations in the original ban.

Pages