 It has also been involved in several cases involving federalism.For a relatively small organization in existence for only two decades, it has had quite a number of landmark cases, including a number that have reached the US Supreme Court.CIR's most famous cases were "Gratz v. Bollinger" and "Grutter v. Bollinger", challenges to the University of Michigan's policies giving preference to minority applicants to its undergraduate college ("Gratz") and its law school ("Grutter").