Polygamy is the act or condition of a person marrying another person while still being lawfully married to another spouse. It is illegal in the United States. The crime is punishable by a fine, imprisonment, or both, according to the law of the individual state and the circumstances of the offense.

Which state is polygamy legal?

United States: Polygamy is illegal in all 50 states however in Utah, in February 2020, the law was significantly changed in the House and Senate to reduce polygamy to the status of a traffic ticket.