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In 2005, John Roberts became the 17th chief justice of the US Supreme Court.

He was 50 years old at the time, which made him the youngest chief justice since John Marshall in 1801.

Roberts is seen in a yearbook photo from his prep school in La Porte, Indiana. He was born in Buffalo but grew up in northwest Indiana. In 1979, he graduated from Harvard Law School.

Roberts shakes hands with US President Ronald Reagan in 1983. He was an associate counsel to Reagan from 1982-1986.

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As an attorney for the government and in 14 years of private practice, Roberts argued 39 cases before the Supreme Court and won 25 of them.

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In May 2001, President George W. Bush nominated Roberts to the US Court of Appeals for the District of Columbia. Roberts is seen at right along with Bush's other judicial appointments.

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In 2005, Bush nominated Roberts to replace retiring Supreme Court Justice Sandra Day O'Connor.

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Roberts, third from left, meets with US senators in Washington a day after he was nominated by Bush. With Roberts, from left, are Sens. Arlen Specter, Bill Frist and Mitch McConnell.

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Roberts meets with US Sen. Mary Landrieu as he makes his rounds on Capitol Hill in July 2005.

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Roberts was tabbed to replace O'Connor, but plans changed after Chief Justice William Rehnquist died in September 2005. Bush announced that he wanted Roberts to replace Rehnquist instead.

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O'Connor weeps as Roberts and other pallbearers carry Rehnquist's casket into the Supreme Court. Roberts was once a law clerk for Rehnquist.

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Roberts answers questions during his second day of confirmation hearings in September 2005. The Senate voted 78-22 to confirm him.

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Roberts' wife, Jane, holds a Bible as her husband is sworn in by Supreme Court Justice John Paul Stevens.

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Roberts and his wife attend his swearing-in ceremony in the East Room of the White House.

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The Roberts walk with their children, Jake and Josie, after he took the Supreme Court bench for the first time in October 2005.

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Bush enjoys a light moment with Roberts and other Supreme Court justices on Roberts' first day. With Bush, from left, are John Paul Stevens, Ruth Bader Ginsburg, David Souter, Antonin Scalia, Roberts, O'Connor and Kennedy.

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Roberts shakes hands with President Barack Obama at Obama's inauguration ceremony in 2009.

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Roberts watches Elena Kagan sign the Oaths of Office after she replaced retiring Justice John Paul Stevens in 2010.

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Roberts administers the oath of office to President Donald Trump in 2017.

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The US Supreme Court, with newest member Brett Kavanaugh, poses for an official portrait in November 2018. In the back row, from left, are Neil Gorsuch, Sonia Sotomayor, Kagan and Kavanaugh. In the front row, from left, are Stephen Breyer, Clarence Thomas, Roberts, Ginsburg and Samuel Alito.

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