Should this turn out to be true, the legal rationale is likely that a warrant is only need to read a communication, not to collect it. So "they" archive everyt

Should this turn out to be true, the legal rationale is likely that a warrant is only need to read a communication, not to collect it. So "they" archive everything and then promise to look at it only when legal to do so. The NSA can even record American citizens if they promise not to read the data if it turns out to be an American they've recorded (unless the FBI wants the data, of course). Even if this promise holds, though, people may dislike this policy, to put it mildly. If a robot takes a naked picture of me, it's an invasion of privacy even if no human ever looks at it.