The Presidential Inaugural Committee made the announcement Friday morning. The justices will administer the oaths to Obama and Biden twice, at the "private" swearing-in on the constitutionally mandated date of Sunday, Jan. 20, and again during the public ceremony on Monday, Jan. 21.
The committee said three women have previously sworn in presidents and vice presidents: Judge Sarah T. Hughes swore in President Johnson in 1963; Justice Sandra Day O’Connor swore in Vice President Dan Quayle in 1989; and Justice Ruth Bader Ginsburg swore-in Vice President Al Gore in 1997.
"It's an incredible honor to have Associate Justice Sonia Sotomayor swear me in,” Vice President Biden said. “I believed strongly that she would make a great Justice, and it was one of the greatest pleasures of my career to be involved in her selection to the Court. From the first time I met her, I was impressed by Justice Sotomayor’s commitment to justice and opportunity for all Americans, and she continues to exemplify those values today. Above all, I’m happy for the chance to be sworn in by a friend – and someone I know will continue to do great things.”