No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any Bill of Attainder, ex post facto Law, or Law impairing the Obligation of Contracts, or grant any Title of Nobility.

• Foreign Policy by States
• Coining Money by States
• Legal Tender Issued by States
• State Bills of Attainder
• State Ex Post Facto Laws
• Contracts
  • Overview of Contract Clause
  • Historical Background on Contract Clause
  • Evolution of Contract Clause's Use
  • State Contracts
    • Early Cases on State Modifications to State Contracts
    • State Sovereign Powers and Contracts
    • Modern Doctrine on State Changes to State Contracts
  • Private Contracts
    • Early Cases on State Changes to Private Contracts
    • Blaisdell Case and State Modifications to Private Contracts
    • State Laws Creating New Contractual Obligations
    • Public Interest and State Modifications to Private Contracts