LAWRENCE, Kan. (AP) — A new U.S. Attorney for Kansas has taken office.

Stephen McAllister was sworn in Thursday in a private ceremony on the University of Kansas campus. U.S. Supreme Court Justice Clarence Thomas administered the oath.

McAllister clerked for Justice Thomas and U.S. Supreme Court Justice Byron White.

He was nominated by President Donald Trump. He will oversee a staff of more than 100, including 50 attorneys who work in Topeka, Wichita and Kansas City, Kansas.

Tom Beall, who was interim U.S. Attorney since former U.S. Attorney Barry Grissom resigned in April 2016, will return to his position as First Assistant U.S. Attorney.

McAllister previously was Solicitor General of Kansas and a professor of law at the University of Kansas, where he taught constitutional law and federal civil rights law.