President Donald Trump tweeted a compliment Friday morning about the 2016 book "Retaking America," by Nick Adams.

Nick Adams, "Retaking America" "Best things of this presidency aren't reported about. Convinced this will be perhaps best presidency ever." — Donald J. Trump (@realDonaldTrump) August 25, 2017

Adams' book was released in February 2016. One of the book's themes is that "political correctness weakens the health and threatens the existence of the American Dream," Adams wrote in a Fox News post about the book's release.

Trump has praised Adams' work before. Since "Retaking America" was published, Adams published "Green Card Warrior," about immigration, which Trump praised in March 2017, calling it a "must read."

Nick Adams new book, Green Card Warrior, is a must read. The merit-based system is the way to go. Canada, Australia! @foxandfriends — Donald J. Trump (@realDonaldTrump) March 3, 2017

Adams responded to the president's compliment with a tweet of his own: