Bisbee on April 2 approved an ordinance authorizing civil unions, but the City Council has since put the local law on hold pending a review and possible changes.
The council acted after Horne threatened the southern Arizona city with a lawsuit.
He said some aspects of Bisbee’s ordinance conflict with state law and that residents could be misled about the legal meaning of a city-certified civil union.
Horne says he wants to guide city attorneys on what cities can legally do and not do.
A Tempe City Council member has said he will propose approval of civil unions in that Maricopa County community.