Right. But if you read the Constitution in light of the Federalist papers, it is clear that those limitations on federal power apply domestically. Otherwise, it is clear that the framers intended to create a fully sovereign entity on the international stage, with the sovereign right to do all the things sovereigns have the right to do, which is pretty much everything. Indeed, that was one of the purposes of the Constitution: to create a strong central government that could act in international matters the same as the European sovereigns. The idea of the Constitution recognizing rights of foreigners that limit the power of the federal government internationally runs wholly counter to all that.

I don't understand what you mean by "all the things sovereigns have the right do do, which is pretty much everything." ?

Clearly there are laws, and the US government is bound to those laws. Are you saying that the US government can have people killed? Torture? And as long as the US legal system isn't there to intervene it is legal?