PMI Food Equipment Group, Inc. closed its plant in Dayton, Ohio in 1995 and moved the operation to Piqua, Ohio after signing a tax-abatement agreement with the City of Piqua, Miami County, and the state of Ohio that resulted in favorable tax treatment for 10 years. In the process of closing its Dayton plant, PMI terminated all of the 66 hourly employees who worked there. The hourly workers and their spouses (collectively referred to as the "Workers") sued PMI, Piqua, Miami County, the state of Ohio, and various other parties, asserting 33 causes of action arising under various state and federal laws in connection with the tax abatement, the closing of the Dayton plant, and PMIs termination of its hourly workers. All but two of the Workers claims were dismissed by the district court, and the remaining two claims were resolved by the parties. The Workers timely filed this appeal. For the reasons set forth below, we AFFIRM the judgment of the district court.