Official text rightpowerlimitif conditionlegal term
1No State shall enter into any Treaty, Alliance, or Confederation; grant ; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any , , or Law impairing the Obligation of Contracts, or grant any Title of Nobility.
2No State shall, without the Consent of the Congress, lay any Imposts or Duties on Imports or Exports, except what may be absolutely necessary for executing its inspection Laws: and the net Produce of all Duties and Imposts, laid by any State on Imports or Exports, shall be for the Use of the Treasury of the United States; and all such Laws shall be subject to the Revision and Control of the Congress.
3No State shall, without the Consent of Congress, lay any Duty of Tonnage, keep Troops, or Ships of War in time of Peace, enter into any Agreement or Compact with another State, or with a foreign Power, or engage in War, unless actually invaded, or in such imminent Danger as will not admit of delay.
Simplified explanation
No State may make treaties, coin money, emit bills of credit, pass bills of attainder, ex post facto laws or laws impairing contracts, or grant titles of nobility. Without Congress's consent, no State may lay import or export duties, keep troops or ships of war, or engage in war.