FILE - Sen. Joseph Biden, D-Del., chairman of the Senate Judiciary Committee, talks to Supreme Court nominee Judge Ruth Bader Ginsburg prior to the start of her confirmation hearing before the committee on Capitol Hill on July 20, 1993, in Washington. President Biden has deep knowledge of the inner workings of the Supreme Court nomination and confirmation process, expertise gained during his 36 years as a U.S. senator, including 17 years as chairman or vice chairman of the Senate Judiciary Committee. Biden knows better than anyone the unexpected turns a Supreme Court nomination can take after it lands on Capitol Hill. (AP Photo/John Duricka, File)