Shelby County v. Holder, 570 U.S. 529, is a landmark decision of the Supreme Court of the United States regarding the constitutionality of two provisions of the Voting Rights Act of 1965: Section 5, which requires certain states and local governments to obtain federal preclearance before implementing any changes to their voting laws or practices; and subsection of Section 4, which contains the coverage formula that determines which jurisdictions are subject to preclearance based on their histories of racial discrimination in voting. From Wikipedia
