Henry Billings Brown,
Yazoo & Mississippi Valley Railroad Company v…
“ While we have never hesitated to vindicate the right of individuals or corporations to enforce the performance of lawful contracts as against subsequent legislation designed to impair them, we have always exacted as a condition that the contract was one which the legislature, or opposite party, had power to make under the Constitution, and that the other party was chargeable with knowledge of all its provisions in that connection. ”
