What are the rules imposed by the Office of Foreign Assets Control (OFAC) for legal...

The head office of a foreign legal entity which has a branch in the US does not need to comply with OFAC rules.

A foreign individual visiting the US for a short vacation is obligated to follow OFAC rules.

Nationals of the US must comply with OFAC rules, regardless of where they are located in the world.

Any foreign corporation is also penalized if it conducts transactions with sanctioned countries under OFAC rules.

A subsidiary of a legal entity of the US, which is formally registered in a foreign country, is exempt from OFAC rules.