Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE is firing back at Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE for saying his proposal to temporarily ban Muslims from entering the U.S. promotes terrorism.

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“The fact that Hillary thinks the temporary Muslim ban, which she calls the ‘Muslim ban’, promotes terrorism, proves Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE was correct when he said she is not qualified to be President,” the presumptive Republican presidential nominee's campaign said in a statement on Thursday.

Clinton was critical of Trump’s call to ban Muslims from entering the country in an interview with CNN.

“When you run for president of the United States, the entire world is listening and watching,” she told CNN’s Chris Cuomo. “So when you say you’re going to bar all Muslims, you’re sending evidence to the Muslim world, and you’re also sending a message to terrorists. … Donald Trump is essentially being used as a recruiter for more people to join the cause of terrorism.”

Trump seized on the moment to fire off an attack that Sanders used against the Democratic front-runner in early April, saying she is unqualified to be president and linked the critique to the disappearance of a jet headed from Paris to Cairo.

"And by the way, ask Hillary who blew up the plane last night — another terrible, but preventable tragedy. She has bad judgement and is unfit to serve as President at this delicate and difficult time in our country's history," the statement said.

Sanders later walked back his comments about Clinton's qualifications, but Trump has repeatedly used them against her.

“Of course [Clinton is qualified to be president],” Sanders said two days after saying the opposite. “On her worst day she would be an infinitely better president than either of the Republican candidates.”