The Morrill Anti-Bigamy Act (37th United States Congress, Sess. 2., ch. 126, ) was a federal law. The act banned men having more than one wife at the same time (bigamy). It also limited the amount of property that a church and non-profit could own in any territory of the United States to $50,000. Justin Smith Morrill of Vermont sponsored it. President Abraham Lincoln signed it on July 8, 1862.