Gov. Gary Herbert on Tuesday signed a bill that keeps polygamy a felony in Utah and increases the penalties for polygamists convicted of committing frauds and abuses.

Herbert’s approval of HB99 affirms the position Utah has held since statehood — that polygamy is against the law. Yet it’s unclear how much of the bill will ever be used.

Polygamists and some sympathetic attorneys have said HB99 will be unconstitutional if it’s applied to consenting adults who choose to live as such a family. Joe Darger, who has three wives and was the most vocal opponent of the bill, has dared prosecutors to charge him.