The Supreme Court has ruled that Antarctica is "a foreign country". The IRS has emphasized recently that Antarctica is "not a foreign country". Does NSF consider Antarctica to be "a foreign country" or "not a foreign country"? 

Do American citizens legally have Constitutional rights in Antarctica? 

Does NSF voluntarily support the Constitutional rights of American citizens in Antarctica?

What legal model is used by NSF to determine the rights of American citizens in Antarctica? 

Since NSF manages all facilities at the stations, which areas or facilities are considered "public" areas (guaranteed Constitutional protection)?  If there are no "public" areas, then what policies does NSF have to ensure protection of "free speech" and "free press"?  What policies does NSF have to keep its contractors from undermining these protections, if any? 

If there are no civil protections granted to Americans in Antarctica, are employees explicitly told this by NSF and its contractors?