On day two of the U.S. government shutdown, Senate Majority Leader Mitch McConnell said Republicans would not adopt President Donald Trump's call for a "nuclear option" to pass a budget with a simple majority, The New York Daily News reported Sunday.

“The Republican Conference opposes changing the rules on legislation,” a spokesman for McConnell (R-Ky.) said in a statement to the Daily News.

The Senate is set to reconvene at 1 p.m. Sunday.

In a tweet Sunday morning Trump had called for the Senate to change the rules on filibusters, which requires a 60 votes to advance a bill. Trump’s “nuclear option” calls for a simple majority of 51 votes.

“Great to see how hard Republicans are fighting for our Military and Safety at the Border. The Dems just want illegal immigrants to pour into our nation unchecked. If stalemate continues, Republicans should go to 51% (Nuclear Option) and vote on real, long term budget, no C.R.'s!” Trump tweeted.

The government officially shut down just after midnight Saturday when the Senate could not muster enough votes to advance a new spending bill.

Republicans have branded the deadlock the “Schumer Shutdown,” blaming the impasse on Senate Minority Leader Chuck Schumer (D-N.Y.). Democrats. meanwhile, have called it the “Trump Shutdown.”