Government shutdown updates: Trump signs government funding bill

House Speaker Mike Johnson laid out a timeline for what's next, saying he will call the House back as soon as the Senate passes a government funding bill.

"At the very moment that they do that final vote, I will call all House members to return to Washington as quickly as possible. We'll give a 36 hour formal and official notice so that we can vote as soon as possible to pass the amended [continuing resolution] bill and get it to the president's desk," Johnson said.

With the current air travel delays, Johnson's message for House Republicans and Democrats was to start making their way back to Washington now.

"Air travel has been grinding to a halt in many places, and as of Sunday, nearly half of all domestic flights, U.S. flights, were either canceled or delayed. It's very serious situation. So I'm saying that by way of reminder -- I'm stating the obvious to all my colleagues, Republicans and Democrats in the House, you need to begin right now returning to the hill. We have to do this as quickly as possible."

House Speaker Mike Johnson, at his daily press conference, said Sunday's breakthrough is now "the beginning of the end" of the longest shutdown in history.

"After 40 days of wandering in the wilderness and making the American people suffer needlessly, some Senate Democrats finally have stepped forward to end the pain," Johnson said. "It appears to us this morning that our long national nightmare is finally coming to an end, and we're grateful for that. At least some Democrats now finally appear ready to do what Republicans and President Trump and millions of hard-working American people have been asking them to do for weeks."

In light of developments on Capitol Hill, and with the clock ticking on an administrative stay of an order that U.S. Department of Agriculture fully fund SNAP payments for November, Justice Ketanji Brown Jackson has asked the Trump administration to indicate by 11 a.m. on Monday whether it still intends to pursue a full stay of the payouts.

Assuming the administration does, she wants both sides to submit any supplemental briefing materials.

-ABC News' Devin Dwyer

It was a key turning point on Capitol Hill on Sunday night, with eight members of the Democratic caucus joining with nearly every Senate Republican to advance a bill that could finally end the federal government shutdown.

But, there are still some additional steps that the Senate needs to take before they formally pass this bill and send it over to the House, and the key question now is how long those steps take. The Senate floor opens at 11 a.m.

Senators will be trying to move the funding bill quickly, but it takes unanimous approval of all 100 senators to do so. If there is an objection from even one senator, it would be enough to slow the process. Without unanimous consent, it could take the Senate hours or even days to finish working on this bill.

-ABC News' Allison Pecorin