What you are ignoring is that this proposal, like CALEA, is really part of a very long chain of events that have led to ever greater police power. If you look at the history of law enforcement for the past 50 years, you see monotonic increases in the power of the police: the power to arrest people, the power to kill people (including the weapons the police carry), the power to conduct surveillance, the power to seize assets, etc. The reason we have the largest prison population on the planet is that we have ceded such vast power to the power to the police (and to prosecutors).
Unfortunately, there are a lot of ring-wing, law-and-order types in this country who see nothing wrong with this picture:
https://upload.wikimedia.org/wikipedia/commons/7/7c/San_Bern...