SALT LAKE CITY -- State attorneys say a federal court challenge to Utah's bigamy law by the "Sister Wives" cable TV show family should be dismissed because they can't prove they've been threatened with arrest or prosecution.
Polygamist Kody Brown and his four wives filed the lawsuit in Salt Lake City's U.S. District Court in July.
The Browns contend they were forced out of Utah after police launched a criminal investigation. They want the state's bigamy law declared unconstitutional.
In court papers filed last week, state attorneys say authorities have not told the Browns to stop living their polygamous lifestyle.
The papers say Utah hasn't prosecuted anyone solely for practicing polygamy in more than 50 years.
An email to the Brown's Washington-based attorney, Jonathan Turley, wasn't immediately returned Tuesday.