In a move that makes a government shutdown more likely, House Republicans approved a spending plan Sunday morning that would delay Obamacare for a year and repeal its tax on medical devices.

The temporary budget resolution now goes back to the Senate, where Democrats have consistently said any changes to President Barack Obama's signature healthcare law is a deal-killer.

On top of that, Obama has already issued a veto threat.

If Washington can't reach a deal, a government shutdown will begin at 12:01 a.m. Tuesday.