Rosalynn Carter, wife of former President Jimmy Carter, has died at the age of 96. Carter served as a longtime political adviser and strategist as Jimmy Carter went from a rural state senator to governor of Georgia in 1970 and president of the United States in 1976. As first lady, Rosalynn Carter joined White House Cabinet meetings and served as an envoy to Latin America. Time magazine in 1979 declared her to be “second most powerful person in the United States.” After leaving the White House, she campaigned to expand U.S. mental healthcare services. She and Jimmy Carter also worked with the charity Habitat for Humanity. Jimmy Carter, who turned 99 in October, entered home hospice care in February. They had just celebrated their 77th anniversary.