In the Granholm, Swedenburg, and Michigan Beer cases, the Court must consider how much power the Twenty-First Amendment grants states to regulate the importation of alcoholic beverages. The cases deal with states that bar out-of-state companies from shipping alcohol directly to in-state customers. Such states generally require liquor distribution through licensed in-state wholesalers. The Twenty-First Amendment, which explicitly declares that transporting liquor into a state "in violation of the laws thereof, is hereby prohibited," would seem to grant states wide leeway to regulate the importation of alcohol. However, the Commerce Clause specifically grants Congress, not the states, the power to "regulate commerce with foreign nations, and among the several States." Historically, courts have read the Commerce Clause as preventing states from interfering with interstate commerce. The states claim that they are simply trying to regulate the liquor market, collect all applicable taxes and make sure alcohol stays out of minors' hands, but the plaintiffs, who include liquor interests and consumers, accuse the states of protecting their local industries, in violation of the Commerce Clause.