sixteen judges who typically sit in three-judge panels. As the state's highest appellate court, the Wisconsin Supreme Court may hear both appeals from lower courts and original actions. In addition to deciding cases, the Supreme Court is responsible for administering the state's court system and regulating the practice of law in Wisconsin. Federal In the United States Senate Wisconsin is represented by Ron Johnson and Tammy Baldwin. Wisconsin is divided into eight congressional districts. Taxes Wisconsin collects personal income taxes (based on five income brackets) which range from 4% to 7.65%. The state sales and use tax rate is 5.0%. Fifty-nine counties have an additional sales/use tax of 0.5%. Milwaukee County and four surrounding counties have an additional temporary 0.1% tax that helps fund the Miller Park baseball stadium, which was completed in 2001. The most common property tax assessed on Wisconsin residents is the real property tax, or their residential property tax. Wisconsin does not impose a property tax on vehicles, but does levy an annual registration fee. Property taxes are the most important tax revenue source for Wisconsin's local governments, as well as major methods of funding school districts, vocational technical colleges, special purpose districts and tax incremental finance districts. Equalized values are based on the full market value of all taxable property in the state, except for agricultural land. In order to provide property tax relief for farmers, the value of agricultural land is determined by its value for agricultural uses, rather than for its possible development value. Equalized values are used to distribute state aid payments to counties, municipalities, and technical colleges. Assessments prepared by local assessors are used to distribute the property tax burden within individual municipalities. Wisconsin does not assess a tax on intangible property. Wisconsin does not collect inheritance taxes. Until January 1, 2008, Wisconsin's estate tax was decoupled from the federal estate tax laws; therefore the state imposed its own estate tax on certain large estates. There are no toll roads in Wisconsin; highway construction and maintenance are funded in part by motor fuel tax revenues, and the remaining balance is drawn from the State General Fund. Non-highway road construction and maintenance are funded by local governments (municipalities or counties). International relations A Mexican consulate opened in Milwaukee on July 1, 2016. Wisconsin has had a diplomatic relationship with the Japanese prefecture of Chiba since 1990. Politics During the Civil War, Wisconsin