Negotiations have gotten very granular.

Barreling toward a noon vote that could reopen the government, Republicans say they have an offer Democrats shouldn’t be able to refuse.

The proposal: an amended three-week short-term spending bill (one week shorter than the original bill that failed last Friday) that funds the Children’s Health Insurance Programs for six years, and an assurance from Senate Republican leaders that an immigration bill will see a debate and a vote in the coming weeks.

But as of Sunday night, Democrats were still saying “no deal.”

As the government shutdown enters its first workweek day, the impasse in the Senate comes down to a deepening frustration over the state of immigration negotiations and longer-term budget talks. Republicans have punted on finding a legislative fix for the Obama-era Deferred Action for Childhood Arrivals program since September, when the Trump administration announced it would end the program by March 5. They’ve also kicked budget negotiations down the road, instead passing three short-term spending deals since October 1.

But at this point in negotiations, it’s become difficult to parse what’s still in contention. At the beginning of shutdown talks, Democrats said they wanted to increase the urgency of immigration negotiations and ensure a vote on a final bipartisan agreement. Republicans have heeded part of their demands.

There are still three crucial factors in these negotiations that are giving Democrats pause and holding up a final deal to open the government. Here’s what’s still up in the air.

1) When is the vote on an immigration bill?

Senate Democrats and their Republican allies, first and foremost, want a guarantee on when Senate Majority Leader Mitch McConnell will move an immigration plan. The Republican leader has so far proven elusive in the DACA debate, famously promising to Sen. Jeff Flake (R-AZ) a vote by the end of January, Read More Here