One America Appeal

The One America Appeal is a 501(c)(3) nonprofit organization founded on 7 September 2017, by all five then living former U.S. Presidents: Jimmy Carter, George H. W. Bush, Bill Clinton, George W. Bush, and Barack Obama. This aimed to encourage support for recovery efforts for Hurricane Harvey, but was then extended to include areas most affected by Hurricanes Irma and Maria. 
The appeal was launched when the five former Presidents aired a joint PSA on the NFL’s regular season opening broadcast.