Part I of this article describes regulatory clashes involving different states\u27 public laws, and then focuses on certain areas of law, including antitrust, securities, and Internet commerce and publishing, where such clashes are most likely to take place. Part II focuses on the different solutions to this regulatory puzzle invoked by scholars, advocating either territorial-based or substance-based approaches. Part III then critiques the two approaches, while emphasizing the need to address the issue from a global perspective, that is, by seeking to harmonize jurisdiction-allocating rules on an international level
