28 CFR §202.256

1. (a)Definition. The terms United States person and U.S. person mean any United States citizen, national, or lawful permanent resident; any individual admitted to the United States as a refugee under 8 U.S.C. 1157 or granted asylum under 8 U.S.C. 1158; any entity organized solely under the laws of the United States or any jurisdiction within the United States (including foreign branches); or any person in the United States.
2. (b)Examples—(1) Example 1. An individual is a citizen of a country of concern and is in the United States. The individual is a U.S. person.
   1. (2)Example 2. An individual is a U.S. citizen. The individual is a U.S. person, regardless of location.
   2. (3)Example 3. An individual is a dual citizen of the United States and a country of concern. The individual is a U.S. person, regardless of location.
   3. (4)Example 4. An individual is a citizen of a country of concern, is not a permanent resident alien of the United States, and is outside the United States. The individual is a foreign person.
   4. (5)Example 5. A company is organized under the laws of the United States and has a foreign branch in a country of concern. The company, including its foreign branch, is a U.S. person.
   5. (6)Example 6. A parent company is organized under the laws of the United States and has a subsidiary organized under the laws of a country of concern. The subsidiary is a foreign person regardless of the degree of ownership by the parent company; the parent company is a U.S. person.
   6. (7)Example 7. A company is organized under the laws of a country of concern and has a branch in the United States. The company, including its U.S. branch, is a foreign person.
   7. (8)Example 8. A parent company is organized under the laws of a country of concern and has a subsidiary organized under the laws of the United States. The subsidiary is a U.S. person regardless of the degree of ownership by the parent company; the parent company is a foreign person.