Over the last three decades, government antitrust enforcers and private plaintiffs in the United States have increasingly sought to apply U.S. antitrust laws to conduct by foreign businesses that is deemed to have effects on the U.S. economy. Many of these foreign businesses have been located in Asia:  since the 1990s there have been waves of U.S. criminal prosecutions and civil cases alleging anticompetitive conspiracies between Japanese, Korean, and Taiwanese sellers and manufacturers.  For most of this time, however, companies in mainland China—despite being the largest exporters of goods to the United States, first in Asia and now in the entire world—have rarely been targeted for U.S. antitrust enforcement.