The Voting Rights Act of 1965 represents a critical juncture in the struggle for racial equality in the United States, aiming to eliminate barriers that disenfranchised minority voters. The Act employed various strategies, such as federal oversight of voter registration and electoral processes in jurisdictions with a history of discriminatory practices, which fundamentally altered the voting landscape. However, subsequent legal challenges and changes in political attitudes have led to new disputes surrounding the Act's effectiveness and relevance. In this context, consider the implications of the U.S. Supreme Court's ruling in Shelby County v. Holder (2013), which invalidated significant provisions of the Voting Rights Act.
Which of the following statements best describes the impact of the Shelby County v. Holder decision on voting rights in the United States?