Roberts may hold key vote as Supreme Court moves right

U.S. Supreme Court Chief Justice John Roberts
U.S. Supreme Court Chief Justice John Roberts listens as President Donald Trump delivers his first State of the Union address in the House chamber of the U.S. Capitol on Jan. 30, 2018. The retirement of Justice Anthony Kennedy means that the conservative Roberts probably will be the justice closest to the court's four liberals, allowing Roberts to control where the court comes down in some of its most contentious cases.
Win McNamee | Pool via AP