“If stalemate continues, Republicans should go to 51% (Nuclear Option) and vote on real, long term budget, no C.R.’s!,” the president wrote on Twitter shortly after 7:30 a.m.

In the past, key GOP senators, including Senate Majority Leader Mitch McConnell (R-Ky.), have rebuffed the president telling him that going nuclear and ending the legislative filibuster could be a damaging move in the long term. If Republicans lost control of the chamber, a 51-vote threshold for legislation could potentially make it easier for more liberal priorities, such as universal health care, to pass the Senate.

In recent years, both parties have curtailed the filibuster, which when invoked, requires 60 votes to pass legislation. The filibuster was designed to differentiate the Senate from the House by ensuring that the majority could not steamroll the minority.