The crime of having multiple spouses concurrently
It is against the law to have multiple and concurrent spouses. Such a marriage is considered legally void. A person who knowingly enters into multiple marriages is guilty of bigamy. These types of cases are rarely prosecuted.
In 2020, an amendment to the Utah State Law on Bigamy (Polygamy) was signed into law, making having multiple wives decriminalized by making it a mere infraction.
Polygamy is still a felony if the prosecutor can prove that the marriage was coerced and entered involuntarily by force or threat of force.
