List of landmark court decisions in the United States
United States v. Windsor,  Ruled on Section 3 of the Defense of Marriage Act, which defines—for federal law purposes—the terms "marriage" and "spouse" to apply only to marriages between one man and one woman. The court ruled the law deprives same-sex couples, who are legally married under state law, of their Fifth Amendment guarantee of equal protection. The federal government must recognize same-sex marriages that have been approved by the states.