The National Rifle Association and others filed a petition for writ of mandate and/or prohibition in the San Francisco County Superior Court after the California Court of Appeal denied a similar petition (see below). Both petitions challenge a San Francisco City and County ordinance prohibiting the sale, distribution, transfer and manufacture of all firearms and ammunition in San Francisco and banning possession of handguns by San Francisco residents. The Superior Court invalidated the ordinance on preemption grounds. On May 29, 2007, LCAV applied for permission to file an amicus brief in support of the City and County of San Francisco. The Court of Appeal denied LCAV’s application for permission to file the amicus brief.