(Associated Press) A federal judge ruled Friday that key parts of Utah’s polygamy laws are unconstitutional, handing a legal victory to a polygamist family that stars in the TV reality show “Sister Wives.”

U.S. District Court Judge Clark Waddoups said in the ruling that the phrase in Utah law that forbids cohabitation with another person was a violation of the First Amendment.

Washington D.C.-based attorney Jonathan Turley has said that Kody Brown and his four wives drew the attention of Utah authorities because of their TLC hit series. The Brown family filed their lawsuit in July 2011, and fled Utah for Las Vegas last year under the threat of prosecution.

Turley argued the case before Waddoups in January.

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