But a new book puts that on stark display with former President George H.W. Bush describing the current commander in chief as a "blowhard" and revealing he voted for Hillary Clinton. But in The Last Republicans, a new book from historian Mark Updegrove about the father and son, they unleash their Trump trash-talking, as shown in book previews from CNN and the New York Times.
But Trump, who has made more than 1,300 false or misleading claims in less than a year and nearly constantly insults his many rivals, did win the presidency.
"I don't like him", Bush Sr. told Updegrove six months before the 2016 presidential election.
It really was no secret that the Bushes aren't really big fans of President Donald Trump.
The interview took place in May 2016, while Trump was steamrolling his way through a packed field of Republican presidential hopefuls to the nomination. "And I'm not too excited about him being a leader".More news: Sen. Rand Paul assaulted in his home
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Mark Updegrove, the author of the book, talked to both Bushes on the record and they made it clear a year ago they were none too happy about the former reality television star becoming president.
Upon learning this, Updegrove wrote, George W. Bush thought to himself: "Wow, this guy really doesn't understand the job of president".
Trump, who doesn't like them either and shares a complicated relationship with all the living former presidents, will have something to say about it soon enough, given how he prides in his ability to counter-punch. His son and also a former president, George W. Bush also has a low opinion of Trump, saying Trump "fans public anger and came to office without any understanding of the job".
The Bushes have despised Trump for decades, Brinkley said, citing reports that the elder Bush snubbed Trump as his running mate in the 1992 election.
A Bush family spokesman answered questions about Updegrove's book and the White House statement with a simple reply: "No comment, but thanks".