I can think of a few other choice words to describe him but I’ll keep them to myself.

(Politico) — Ronald Reagan’s conservative son called his liberal half-brother “an embarrassment” Saturday for speculating in a new memoir that their father suffered from Alzheimer’s disease while president.

“Ron, my brother was an embarrassment to his father when he was alive and today he became an embarrassment to his mother,” Michael Reagan posted on Twitter.

“My brother seems to want [to] sell out his father to sell books,” he added in another tweet.

The sibling tension bubbles over just three weeks before Ronald Reagan’s 100th birthday, which will kick off a year of events to honor the 40th president.

In “My Father at 100,” Ron Reagan recalls early warning signs of his father losing his mental faculties. “The question,” he writes, “of whether my father suffered from the beginning stages of Alzheimer’s while in office more or less answers itself.”

The Ronald Reagan Presidential Foundation, closely tied to former first lady Nancy Reagan, issued its own statement, more delicate but still forceful, pushing back on the claim that he suffered from Alzheimer’s while leading the free world.

“We believe Ron has written a wonderfully warm and engaging book about life with his father, Ronald Reagan,” the foundation said. “It offers a tribute that only a son could present. As for the topic of Alzheimer’s, this subject has been well documented over the years by both President Reagan’s personal physicians, physicians who treated him after the diagnosis, as well as those who worked closely with him daily. All are consistent in their view that signs of Alzheimer’s did not appear until well after President Reagan left the White House.”

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