With President Donald Trump and first lady Melania Trump watching, Justice Neil Gorsuch on Thursday was officially invested as the 101st associate justice of the United States in a brief, formal ceremony in the U.S. Supreme Court.

As the ceremony got underway, Gorsuch sat in the well of the courtroom in the same chair used by Chief Justice John Marshall during the early 19th century and used for the investiture of every member of the court since Lewis Powell Jr. took his judicial oath in 1972.

After the clerk of the court read the presidential commission appointing Gorsuch, the new justice walked up to the bench where Chief Justice John Roberts Jr. administered the oath. Gorsuch thanked his colleagues for their “warm welcome.”