You are absolutely wrong:
those at Guantanamo have no constitutional rights, they are not covered by RFRA because they are not persons in the constitutional sense, she wrote. (The ruling that the detainees have no constitutional rights is now under review by the Supreme Court in two pending cases on detainees legal rights, Boumediene v. Bush, 06-1195, and Al Odah v. U.S., 06-1196).
Once on US soil they are considered "persons" covered by the US Constitution. So yes, their legal status under the US Constitution does change once they are on US soil.
Thanks for ruining my fun, lol./s