Coleman v. Miller, 307 U.S. 433 (1939), is a landmark decision of the United States Supreme Court which clarified that if the Congress of the United States—when proposing for ratification an amendment to the United States Constitution, pursuant to Article V thereof—chooses not to set a deadline by which the state legislatures of three-fourths of the states or, if prescribed by Congress State ratifying conventions in three-fourths of the states, must act upon the proposed amendment, then the proposed amendment remains pending business before the state legislatures (or ratifying conventions). The case centered on the Child Labor Amendment, which was proposed for ratification by Congress in 1924.