Samuel Freeman Miller,
Curtis v. Whitney — Opinion of the Court
“ Nor does every statute which affects the value of a contract impair its obligation. It is one of the contingencies to which parties look now in making a large class of contracts, that they may be affected in many ways by State and National legislation. For such legislation demanded by the public good however it may retroact on contracts previously made, and enhance the cost and difficulty to performance, or diminish the value of such performance to the other party, there is no restraint in the Federal Constitution, so long as the obligation of performance remains in full force. ”
