If the exclusive regulation of the value and alloy of coin was properly delegated to the federal authority, the policy of it equally requires a control on the States in the cases above mentioned. It must have been meant 1. to preserve uniformity in the circulating medium throughout the nation. 2. to prevent those frauds on the citizens of other States, and the subjects of foreign powers, which might disturb the tranquility at home, or involve the Union in foreign contests.
