I don't think collaborator is a good term here, it is implying they are secretly giving up US citizens for some evil nefarious purposes to the government. I'd label them as a US based company that is complying with US law.
A distinction without a difference?
Germany is a long time NSA collaborator. If Europeans wanted to they could handle intelligence themselves they could, they don't want to.
This. People forget global intels are collaborating in many forms.