Would strictly regulate the number of seats in the United States House of Representatives. Proposed September 25, 1789, and still before the states. Pending since September 25, 1789. Latest ratification took place on June 27, 1792. The Congressional Apportionment Amendment is a proposed amendment to the United States Constitution that addresses the number of seats in the House of Representatives. It was proposed by Congress on September 25, 1789, but has not been ratified by the requisite number of state legislatures. As Congress did not set a time limit for its ratification, the Congressional Apportionment Amendment is still pending before the states. As of 2026, it is one of six unratified amendments. Wiki link