In a new attack on the bill that authorized state funding for professional sports stadiums, a group of taxing districts and property owners are challenging property tax caps authorized for 97 counties in Missouri. Within two weeks of passing the legislation, House Speaker Jon Patterson had established an interim committee to study property taxes amid questions about the property tax provision’s constitutionality. In 75 counties, voters could prevent property taxes from rising more than 5% per year from a base amount, or the rate of inflation, whichever is greater. In 22 other counties, voters could freeze their homes’ property taxes with exceptions for newly voted levies and additional value from improvements. Many legislators from the state’s largest counties asked to be excluded, leaving Boone, Greene, Jackson, St. Louis County and the city of St. Louis out of the law.