In Colegrove v. Green, the U.S. Supreme Court looks at whether the redrawing of congressional districts by the Illinois state legislature that placed more citizens in one district than in others unfairly denied citizens the right to be equally represented in Congress.
Finding that the redrawing of district lines did not violate the Constitution, the Court rules that the way legislative districts are drawn is a political question best left to state legislatures, not the courts. The Court will address this issue in 1962 in Baker v. Carr when it says that questions of whether legislative line drawing is fair and constitutional could properly be decided by the courts.