> Yes, but Guantanamo is outside the US and so the Constitution doesn't apply.

Nowhere in the Constitution is there any support for the idea that the Constitution only limits the actions of the US government that happen to be within the US rather than on territory leased from another country and subject to full control by the US government.

It doesn't say "any person in the USA" nor "any US citizen", when it wants to specify that then the amendment uses "the people". Would be interested in the actual caselaw for this?