On June 10, 1946, the U.S. Supreme Court upheld uneven congressional districting plans in
Colegrove v. Green. The case challenged an Illinois districting plan that concentrated voters into large districts in the center of the state and did not balance for population. The Court reasoned that districting was a political question for the states to decide without judicial interference. This opinion was overturned less than 20 years later in
Baker v. Carr, which set judicial standards for invoking political question doctrine.

Learn more about
political question doctrine from the University of Missouri at Kansas City School of Law.