The Seventh Circuit recently upheld a local ordinance in Grande Chute, Wisconsin that banned all private signs on public rights-of-way despite challenges from a local labor union. In 2014, the town of Grande Chute passed a zoning ordinance that banned all private signs on public rights-of-way.  Under the authority of the zoning ordinance, two town officials ordered a local chapter of the Construction and General Laborers’ Union to remove the labor union’s large, 12-foot inflatable…