Mailing Standards of the United States Postal Service - International Mail Manual > 7 Treatment of Inbound Mail > 780 Items Mailed Abroad by or on Behalf of Senders inthe United States > 782 Definition of Terms
A resident of the United States includes any firm that has a place of business in the United States or is incorporated or otherwise organized in the United States, its territories, or its possessions.
A mailing is made by or on behalf of a person or firm that is a resident of the United States if such a resident seeks or expects to derive economic benefit or advantage from that mailing.
A place of business in the United States is any location in the United States, its territories, or its possessions where a firm’s employees or agents regularly have personal contact with other individuals for conducting the firm’s business. For the purposes of this section, a firm whose employees or agents have personal contact with others for conducting the firm’s business in different places in the United States for short periods (for example, at hotels in different cities for 1 or 2 days at a time) is considered to have a place of business in the United States if the aggregate amount of time spent in the United States is 180 days or more within 12 consecutive months.
The use of a nonexclusive agent in the United States for the sole purpose of accepting orders and remissions for transmission to a firm in another country or for the sole purpose of distributing merchandise manufactured in another country and shipped to the United States in bulk does not by itself establish a place of business in the United States.