No such thing for .us - trustee
But you don't need to own .us
What you need is to have a connection with a entity citizen or company with residence in USA
And this must provide only in case of a Nexus complain ( more & more rare )
One of Nexus rules are
C31
"A foreign entity or organization that has a bona fide presence in the United States of America or any of its insular areas who regularly engages in lawful activities (e.g., sales of goods or services or other business, commercial or non-commercial, including not-for-profit relations in the United States)."
If you are fron France ( for example ) will be C31/FR