On November 16, 2007, the Mackinac Center for Public Policy filed a brief of amicus curiae with the Michigan Supreme Court in the case of Michigan Department of Transportation v Tomkins. The legal dispute involves the amount of compensation a property owner should receive from state government when the state uses eminent domain to take part of the owner’s property. Specifically, the Michigan Supreme Court asked whether a state law that limits the property owner’s compensation to so-called "special-effect" damages violates the common understanding of the "just compensation" guaranteed in eminent domain cases by the Michigan Constitution.