The US Nexus requirement specify that all registrants must fall into one of the following categories to register in the usTLD:
1) A natural person
a) who is a United States Citizen (category C11),or
b) who is a permanent resident of the United States of America or any of its possessions or territories (category C12).
2) A U.S. organization incorporated within one of the fifty (50) U.S. states, the District of Columbia, or any of the United States possessions or territories or organized or otherwise constituted under the laws of the United States of America, the District of Columbia or any of its possessions or territories or a U.S. federal, state, or local government entity or political subdivision thereof (category C21).
3) An entity of organization that has a bona fide presence in the United States of America or any of its possessions or territories that
a) Regularly engages in lawful activities (sales of goods or services or other business, commercial or non-commercial, including not-for-profit relations in the United States) (category C31), or
b) has an office or other facility in the U.S. (category C32).