|   |  "No state shall ... 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."
 |   | Quote by: |  |  | Source: | art. I, § 10, cl. 1. |  |  |  |  |   |  |  
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