President Donald Trump praised Republicans for fighting to keep the government open but suggested that they end the Senate rule requiring 60 votes to pass a budget.

“If stalemate continues, Republicans should go to 51% (Nuclear Option) and vote on real, long-term budget, no C.R.’s!” Trump wrote on Twitter on Sunday morning.

Thanks to a handful of Senate Democrats, the Senate is unable to reach a 60 vote threshold to pass a continuing resolution to keep the government open.

“Great to see how hard Republicans are fighting for our Military and Safety at the Border,” Trump wrote. “The Dems just want illegal immigrants to pour into our nation unchecked.”

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! — Donald J. Trump (@realDonaldTrump) January 21, 2018

Since the shutdown began on Saturday, Trump criticized Democrats for demanding amnesty for illegal immigrants rather than keeping the government open for lawful Americans.

“Democrats are holding our Military hostage over their desire to have unchecked illegal immigration,” he wrote. “Can’t let that happen!”