Jimmy Carter Turns 90

Happy 90th Birthday, President Carter! Michelle and I send our best wishes to you and Rosalynn. -bo pic.twitter.com/Du99I0S524
— The White House (@WhiteHouse) October 1, 2014

Last night President Obama congratulated former President Jimmy Carter on his 90th birthday. Carter is the sixth US president to become a nonagenarian. The others: George H.W. Bush, Ronald Reagan, Gerald Ford, Herbert Hoover, and John Adams. To date, Ford was the longest-lived president at 93 years, 165 days.