Under the Antartic treaty the US cant have a military bases up there.
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The Antartic Treaty, December 1, 1959
The Governments of Argentina, Australia Belgium, Chile, the French Republic, Japan, New Zealand, Norway, the Union of South Africa, the Union of
Soviet Socialist Republics, the United Kingdom of Great Britain and Northern Ireland and the United States of America,
Recognizing that it is in the interest of all mankind that Antarctica shall continue forever to be used exclusively for peaceful purposes and shall
not become the scene or object of international discord;
Article I
1. Antarctica shall be used for peaceful purposes only. There shall be prohibited, inter alia, any measures of a military nature, such as the
establishment of military bases and fortifications, the carrying out of military maneuvers, as well as the testing of any types of weapons.
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I guess if you were not a member of the treaty you could try to put a military base up there, but I doubt the member countries would like that too
much.
www.yale.edu...