What about the spying on Europeans or are they not considered people?
Presumably, as Europeans are by definition not subject to American laws, they are not relevant to a case involving an American intelligence agency breaking American laws limiting American intelligence agencies' ability to spy on American citizens. Because of course, spying on people outside one's own country is what intelligence agencies are supposed to do.
Throughout the history of America we've seen the tension shift to one side of this rope or the other. through a series of Supreme Court decisions in the very early 1900's (during the Spanish American war) it was settled at the highest level that American occupied territories do not have a right to self-determination nor to many other constitutional rights. Today this is status quo.