With a proper oversight regime and individualized warrants, I can see this being an acceptable use of NSA power. With the absurd degree of intrusive latitude the NSA possesses now, it just makes it easier for them to violate civil liberties on a massive scale. Very few people can avoid being compromised by backdoors in these devices and companies, the same way very few people can avoid the physical threat of government aggression. The difference is that the latter has a far more robust system of controls to ensure it is used judiciously and ethically. Until the former has the same, we need to do everything we can to limit or invalidate the NSA's power.
