ents. Plaintiffs claim these requirements are met because De- fendants purposefully directed their activi- ties at the United States. Burger King v. Rudzewicz, 471 U.S. 462, 472, 479, 105 8.Ct. 2174, 85 L.Ed.2d 528 (1985) (explain- ing jurisdiction is appropriate if defendant “purposefully directed his acti

minimum contacts requirement is satisfied “if the defendant has ‘purposefully directed’ his activities at the residents of the forum.” Burger King v. Rudzewicz, 471 U.S. 462, 474, 105 S.Ct. 2174, 85 L.Ed.2d 528 (1985). Foreseeability is not enough, there must be “some act by which the defendant purposefully