U.S. Territory Laws
The United States has five major inhabited territories, each with its own legal system, constitution or organic act, and unique legal traditions. Unlike states, territories are subject to congressional plenary power under the Territory Clause of the U.S. Constitution.
Puerto Rico
Guam
U.S. Virgin Islands
American Samoa
Northern Mariana Islands
Understanding Territory Law
Constitutional Status
U.S. territories are governed under the Territory Clause (Art. IV, § 3) of the Constitution, which grants Congress broad power over territorial governance. The Insular Cases (1901–1922) established that only “fundamental” constitutional rights apply in unincorporated territories.
Legal Diversity
Each territory has a distinct legal heritage. Puerto Rico follows the civil law tradition; American Samoa protects communal land ownership; the CNMI has unique immigration provisions; and each territory has its own court system and statutory code.