Senator Warren holds mock swearing-in ceremony in Boston

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BOSTON (AP) - Sen. John Kerry joined Sen. Elizabeth Warren in Boston on Saturday as the new junior senator was sworn in again.

Sen. Kerry joked about his many years as the junior senator for the state.

"I was junior senator for 26 years. In terms of legislative days, if, if I am confirmed and if I am confirmed on time, she may have been junior senator for three legislative days," Sen. Kerry joked about his new colleague.

The state's newest U.S. senator's re-enactment of her swearing-in ceremony was held at Roxbury Community College.

The Democrat was formally sworn in on Thursday in Washington. But Warren, the state's first woman senator, decided to hold the mock swearing-in as a way to thank supporters who couldn't trek down to the nation's capital.

Supreme Court Justice Elena Kagan administered the oath of office. Kagan, the former dean of Harvard Law School where Warren taught, briefly became an issue during the election that propelled Warren into the Senate and ousted former Republican Sen. Scott Brown, who had opposed her nomination to the high court.