Michael Reagan: My Brother Is an 'Embarrassment' Conservative Reagan son attacks liberal brother for Alzheimer's claim By Mark Russell, Newser Staff Posted Jan 16, 2011 6:31 AM CST 83 comments Comments Conservative commentator Michael Reagan, son of former President Ronald Reagan, has come out swinging in response to his brother's claims that their father suffered from Alzheimer's while in office. (AP Photo/Kelley McCall) (Newser) – Ronald Reagan's sons are squabbling, with conservative Michael calling younger, liberal brother Ron "an embarrassment" and asking the public to "pray for my brother." The ruckus comes after Ron speculated in his forthcoming book that the 40th president suffered from the early effects of Alzheimer's while in office. “Ron, my brother was an embarrassment to his father when he was alive and today he became an embarrassment to his mother,” Michael Reagan tweeted. Reagan's presidential foundation, likely on Nancy Reagan's behalf, praised Ron Reagan's book as "a tribute that only a son could present," but firmly denies Alzheimer's reared its head until after Reagan left the White House. The spat comes in the lead-up to the conservative icon's 100th birthday—and the brothers' very different books, reports Politico. “My brother seems to want [to] sell out his father to sell books," Michael said in a separate tweet. Michael Reagan's book is titled The New Reagan Revolution: How Ronald Reagan’s Principles Can Restore America’s Greatness; both tomes are due Tuesday.