The 51-year-old Jackson is the court’s 116th justice replacing Justice Stephen Breyer’s following his retirement.
Jackson recited the two oaths required of Supreme Court justices, one administered by Breyer and the other by Chief Justice John Roberts.
“With a full heart, I accept the solemn responsibility of supporting and defending the Constitution of the United States and administering justice without fear or favor, so help me God,” Jackson said in a statement issued by the court. “I am truly grateful to be part of the promise of our great Nation. I extend my sincerest thanks to all of my new colleagues for their warm and gracious welcome.”
Jackson, a federal judge since 2013, is joining three other women, Justices Sonia Sotomayor, Elena Kagan and Amy Coney Barrett — the first time four women will serve together on the nine-member court.
Biden nominated Jackson in February, a month after Breyer, 83, announced he would retire at the end of the court’s term, assuming his successor had been confirmed. Jackson join the Supreme Court soon after the controversial decision on abortion. Her joining the bench will not effect the conservative majority on the court.