Even by the standards of Joe Biden gaffes, this was a big one. During Wednesday night's Democratic debate in Atlanta, the former vice president, while telling Cory Booker about the depth of his support in the black community, said he had the support of the "only African-American woman that’s ever been elected to the US Senate," the Hill reports. He was referring to former Sen. Carol Moseley Braun, but his remark brought laughter from Sen. Kamala Harris, two podiums away, who was elected in 2016. "That's not true," she said. "The other one is here!" Biden then claimed he had said the first African-American woman elected to the Senate. He also took heat for saying America needs to "keep punching at" the problem of domestic violence. (More Democratic debate stories.)