President Joe Biden marked Jan. 9 as a national day of mourning in honor of the death of former President Jimmy Carter.

In 1982, Carter and his wife Rosalynn opened The Carter Center to promote democracy and human rights around the world. The Carters also championed Habitat for Humanity, helping volunteers build, renovate and repair more than 4,000 homes. Carter won the Nobel Peace Prize in 2002 more than two decades after he left office.