John Glover Roberts Jr. (born January 27, 1955) is an American lawyer and jurist serving as the 17th chief justice of the United States since 2005. He was nominated by President George W. Bush to succeed associate justice Sandra Day O'Connor, but was withdrawn and renominated to replace Chief Justice William Rehnquist after Rehnquist's death in 2005. Roberts presided over the first impeachment trial of Donald Trump in early 2020; however, he declined to preside over the second impeachment trial of Trump, who was impeached as president, but whose term had expired by the time of the trial.Roberts grew up in northwestern Indiana and was educated in Catholic schools. He studied history at Harvard University and then attended Harvard Law School, where he was managing editor of the Harvard Law Review.