What can you say? It's current technology, and if they don't have their own system, while the US does have it's own system, then they will be at a sort of disadvantage.
Such surveillance is part of the current world we live in, and nothing is going to stop it. Should they US not send up satellites that can monitor the whole world because for some it might be "morally" wrong? (as opposed to actually wrong).
Nations just have to adjust to the new reality.