"I would love for him to embrace the kind of reforms I call for in my book," Lee, who hasn't endorsed Trump, said during an interview on "Fox and Friends" while promoting his new book, "Our Lost Constitution: The Willful Subversion of America's Founding Document."

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"I'd love to see him go after federalism and separation of powers," Lee said, arguing for local governing and for Congress to remain focused on making laws instead of the president.

"I'll tell you, if Donald Trump embraced those two principles outlined in this book, I think we'd be a whole lot better off as a country and he'd be a whole lot better off as a candidate," Lee added.