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No State shall grant letters of marque & reprisal or enter into treaty or alliance or confederation nor grant any title of nobility nor without the Consent of the Legislature of the United States lay any impost on imports—nor keep troops or Ships of War in time of peace—nor enter into compacts with other States or foreign powers or emit bills of Credit or make any thing but Gold Silver or Copper a tender in payment of debts nor engage in War except for self defence when actually invaded or the danger of invasion be so great as not to admit of a delay until the Government of the United States can be informed thereof—& to render these prohibitions effectual the Legislature of the United States shall have the power to revise the laws of the several States that may be supposed to infringe the Powers exclusively delegated by this Constitution to Congress & to negative & annul such as do.