Extraterritorial Application of American
Criminal Law
Although American courts that try aliens for overseas violations of American law must operate within the confines of due process,19 the Supreme Court has observed that the Constitution’s due process commands do not protect aliens who lack any “significant voluntary connection with the United States.”20
“The global view . . . of the Constitution is also contrary to this Court’s decisions in the Insular Cases, which held that not every constitutional provision applies to governmental activity even where the United States has sovereign power. . . . t is not open to us in light of the Insular Cases to endorse the view that every constitutional provision applies wherever the United States Government exercises its power. Indeed, we have rejected the claim that aliens are entitled to Fifth Amendment rights outside the sovereign territory of the United States.” United States v. Verdugo-
Although American courts that try aliens for overseas violations of American law must operate within the confines of due process,19 the Supreme Court has observed that the Constitution’s due process commands do not protect aliens who lack any “significant voluntary connection with the United States.”20
If the territorial principle is more expansive than its caption might imply, the protective principle is less so. It is confined to crimes committed outside a nation’s territory against its “security, territorial integrity or political independence.”46 As construed by the courts, however, it is
understood to permit the application abroad of statutes which protect the federal government and its functions.47 And so, it covers the overseas murder or attempted murder of federal officers or those thought to be federal officers;48 acts of terrorism calculated to influence American foreign policy;49 conduct which Congress has characterized as a threat to U.S. national security;50 or false statements or forgery designed to frustrate the administration of U.S.our immigration laws.51
Even by international standards, however, the territorial principle applies more widely than its title might suggest. It covers conduct within a nation’s geographical borders. Yet, it also encompasses laws governing conduct on its territorial waters, conduct on its vessels on the high
seas, conduct committed only in part within its geographical boundaries, and conduct elsewhere that has an impact within its territory.42