U.S. Supreme Court struck down key parts of Voting Rights Act 4 years ago.
Execution moves forward despite a flurry of legal challenges that spared three convicted killers.
Ruling from Supreme Court allows procedure to continue.
New justice hears 3 cases in opening day on top court.
Justice Neil Gorsuch's first week on the Supreme Court bench features an important case.
They were similar to Texas laws struck down by U.S. Supreme Court.
Trump praised new Supreme Court Justice during ceremony.
Neil Gorsuch will be sworn in with two oaths on Monday.
Key votes are set today in the escalating Senate battle over Neil Gorsuch.
Court to determine whether law's protections apply to LGBT employees nationwide