Hillary ClintonHillary Diane Rodham ClintonJuan Williams: Bush could strike blow for Biden Zuckerberg expressed concern to Trump over rhetoric amid protests: Axios Montana barrels toward blockbuster Senate fight MORE would make a "darn good president," while Donald TrumpDonald John TrumpFauci says his meetings with Trump have 'dramatically decreased' McEnany criticizes DC mayor for not imposing earlier curfew amid protests Stopping Israel's annexation is a US national security interest MORE would take the U.S. back 50 years, a former George W. Bush administration official said Sunday. 

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Former U.S. Commerce Secretary Carlos Gutierrez became one of several Republicans last week to diverge from the party and back Clinton, the Democratic nominee for president. 

"I think ... Hillary Clinton is the best for the country. I'm not thinking about it as a Republican. I'm thinking about it as a U.S. citizen," Gutierrez said on CNN's "State of the Union." 

"I think at some point you have to put the party aside and think about what's best for the country. I don't want to live in a society that Donald Trump will create." 

He said Clinton "has the experience" to be president and learned about growing the economy from her husband, former President Bill ClintonWilliam (Bill) Jefferson ClintonTop Democratic pollster advised Biden campaign to pick Warren as VP How Obama just endorsed Trump Trump, Biden signal how ugly the campaign will be MORE

"I think she'd make a darn good president," said the former Jeb Bush supporter. 

He also slammed Trump, the Republican presidential nominee, for being backed by David Duke, a white supremacist and former Ku Klux Klan leader running for the U.S. Senate in Louisiana. 

"He's under Trump's platform. Is that a trend? Are we going to see more of that? Is that the kind of society we're going to become? Are we going back 50 years? I don't want to go back 50 years."