With a hug from his son after a ceremonial oath, Chief Justice John Roberts began his first day at the Supreme Court.
Across town, the president introduced his pick to fill the other vacancy, his White House counsel, Harriet Miers.
Miers said, “If confirmed, I realize I will have a tremendous responsibility to keep the judicial branch strong.”
Miers has never been a judge, but she's been alongside president bush for more than a decade.
From the senators who will confirm her, cautious optimism.
Sen. Chuck Schumer, D - NEW YORK, said, "It could have been a lot worse."
Sen. Dianne Feinstein, D - CALIFORNIA, said, "I'm delighted, the fact that she's a woman. This is Sandra Day O'Connor's seat."
Sen. John Cornyn, R – TEXAS, said, “With Harriet Miers, I think you get the whole package.”
The next step is confirmation hearings, before the senate judiciary committee.
Tuesday is a day off for the High Court, Then, on Wednesday, the Justices will hear arguments in a high-profile appeal over Oregon's law about physician-assisted suicide.