Kleiner v. City of Milwaukee

The plaintiff contends that retroactive legislation of a remedial nature is not repugnant to the constitution. She claims further that the purpose of the legislation was remedial or procedural. On the other hand, it is contended that a retroactive law which impairs the obligation of a contract or which interferes with vested rights is unconstitutional as a taking of property without due process of law.

The issue to be resolved is whether ch. 397 is remedial or procedural legislation, or whether it is a retroactive law that impairs the obligation of a contract or interferes with vested rights.…