Garner resides in Illinois and promotes boxing matches for SuperSports, Inc., an Illinois corporation. Garner created the promotional concept of the "Ages" fights—a series of 3 boxing matches pitting older fighter George Foreman against a younger fighter. The concept included titles for the three fights, including one titled "Battle of the Ages." Garner contacted Foreman and his manager, both Texas residents, to sell the idea, and the three agreed to meet in Las Vegas to discuss the concept. Foreman's manager signed a nondisclosure agreement (a type of contract) that prohibited him from disclosing Garner's promotional concepts unless they signed a contract. The parties NEVER signed a contract, but Foreman subsequently promoted a fight using Garner's "Battle of the Ages" concept. Garner filed suit against Foreman and his manager in federal district court in Illinois. On what basis might the federal district court in Illinois attempt to exercise jurisdiction in this case?