Four couples are challenging Arizona's ban on same-sex marriage in a putatative class action, Courthouse News Service reports. For example, "plaintiffs Holly Mitchell and Suzanne Cummins say that though they were able to become certified foster care parents, only Cummins was allowed to adopt their two children because 'Arizona law strongly prefers heterosexual couples in permanent adoption proceedings and permits only a husband and wife to jointly adopt,'" Courthouse News Service further reports. The plaintiffs are seeking declaratory judgment and injunctive relief.