Congress has until late Friday to pass a massive federal spending bill that would finance the government through September.
But lawmakers are still struggling to iron out the details of the $1.3 trillion bill. And if they can't resolve a number of issues before the deadline, the government will shut down once again.
According to several reports, Democrats and Republicans continued to butt heads on President Trump's border wall, immigration, background checks for firearm purchases and other key points.
Lawmakers originally aimed to release the spending bill before Wednesday. But now, many aren't hopeful they'll come to an agreement in time to avoid a shutdown. And, as Politico notes, continuing the negotiations into Wednesday increases the likelihood that Congress will pass short-term legislation to prevent a temporary shutdown.