PITTSBURGH (AP) — Current and former professional athletes and players’ unions have sued Pittsburgh over a tax levied on visiting pro athletes. At issue are so-called “jock taxes” typically levied on professional athletes who work for short periods of time in cities. The Pittsburgh lawsuit argues the city unfairly levies a 3% earned income tax on visiting professional athletes while taxing all other residents at 1%. Attorney Stephen Kidder says the tax violates the state and U.S. constitutions.