The Supreme Court's Wrong Decision

I find it more than a bit odd that the Supreme Court declared that the rights recognized by the U.S. Constitution apply to non-citizens/residents. What other country would have the audacity to declare that their Constitution's laws extended to include the citizens of other countries? The Constitution applies only to "We the People of the United States . . ." The Constitution makes it clear that the Congress is supposed to pass treaties. The international treaties we have agreed to abide by make it clear what we should do with the captives at GItmo. The Supreme Court should have declared what is in fact the case: they have no jurisdiction to decide anything about the citizens of other countries or about treaties we have signed.

I do think they were right about the 2nd Amendment, though. And while I'm against the death penalty, I do sometimes find the Court's understanding of "cruel and unusual" to be a bit odd.