Final answer:
In Shelby County v. Holder, the Voting Rights Act was weakened when it was decided that the Department of Justice no longer had to validate a state's redistricting plan if the state had a history of racial discrimination.
Step-by-step explanation:
In the case Shelby County v. Holder, the Voting Rights Act was weakened when it was decided that the Department of Justice no longer had to validate a state's redistricting plan if the state had a history of racial discrimination.