to interstate commerce. Steward Machine Company v. Davis, The federal government is permitted to impose a tax even if the goal of the tax is not just the collection of revenue. New Negro Alliance v. Sanitary Grocery Co., The Norris–La Guardia Act of 1932 prohibits employers from proscribing the peaceful dissemination of information concerning the terms and conditions of employment by those involved in an active labor dispute, even when such dissemination occurs on an employer's private property. United States v. Darby Lumber Co., Control over interstate commerce belongs entirely to Congress. The Fair Labor Standards Act of 1938 is constitutional under the Commerce Clause because it prevents the states from lowering labor standards to gain commercial advantages. Wickard v. Filburn, The Commerce Clause of the Constitution allows Congress to regulate anything that has a substantial economic effect on commerce even if that effect is indirect. Cooper v. Aaron, The states are bound by the decisions of the Supreme Court and cannot choose to ignore them. Oregon v. Mitchell, Congress has the power to regulate requirements for voting in federal elections, but it is prohibited from regulating requirements for voting in state and local elections. This decision preceded the ratification of the Twenty-sixth Amendment in 1971, which lowered the minimum voting age to 18 for all elections. Marquette National Bank of Minneapolis v. First of Omaha Service Corp. States may not cap the interest rates offered to their citizens by federally chartered banks based in other states; a holding that contributed greatly to the growth of the credit card industry in the ensuing decades. Garcia v. San Antonio Metropolitan Transit Authority, Congress has the power under the Commerce Clause of the Constitution to extend the Fair Labor Standards Act, which requires that employers provide minimum wage and overtime pay to their employees, to state and local governments. Heath v. Alabama, The Double Jeopardy Clause of the Fifth Amendment does not prohibit two different states from separately prosecuting and convicting the same individual for the same illegal act. South Dakota v. Dole, Congress may attach reasonable conditions to funds disbursed to the states without violating the Tenth Amendment. United States v. Lopez, The Gun-Free School Zones Act of 1990 is unconstitutional. The Commerce Clause of the Constitution does not give Congress the power to prohibit the mere possession of a gun near a school because gun possession by itself is not