Not every law that's constitutional is also wise. Keep that in mind as the Supreme Court prepares to rule on the 1965 Voting Rights Act.
It seems like an easy case. How could a federal statute designed to end the historic suppression of African American voting not be constitutional? The 15th Amendment gives voters of all races equal rights and expressly grants Congress the power to enforce those rights - which Congress exercised by reauthorizing the Voting Rights Act (VRA) for 25 years in 2006.