.US is the country code top-level domain (ccTLD) for the United States.

Prospective Registrants in the usTLD must fall in one of three U.S. Nexus categories and must certify that they have a “bona fide presence in the United States.”

Categories:

1. You are a US citizen or permanent resident
2. You are a US business or organization.
3. You are a “foreign entity organization that has a bona fide presence in the United States of America or any of its possessions or territories.”