Collection and analysis of mail records after suspicion may be a long-standing practice, but universal collection before suspicion is something else entirely.Legally, it doesn't matter. Its warrantless. The Police don't need suspicion to analyze mail records! They don't prove anything to a judge, they just get what they want. The Post Office keeps track of your mail records anyway, so the Police can easily "retroactively" swim through that metadata whenever they please (again, without a warrant). No seriously, how do you think they got that Ricin letters guy so quickly?
There's a really, really huge difference between information entrusted to a limited set of third parties to handle to the minimum extent necessary to carry out a service, and information made public.
And thus, my anger why "Professor" Barnett isn't focusing on the relevant section of law. Section 215 of the Patriot Act, the (warrantless) collection of 3rd party "business records or any tangible things".
The law is _very_ clear where the NSA derives THESE powers from. Washington debate has been very clear to anyone who has paid attention. There is no need for "secret interpretations" of law, its clear as freaking day. This controversy should be focusing on the legal aspects of the controversy, you know... the parts that we can FIX instead of sitting around like dumbasses who can't figure out how to read.
I have an expectation for "legal experts" to tell this sort of information to the public. The solution is quite straightforward and simple. If you don't like what the NSA is doing, reform section 215 of the Patriot Act.
My anger is at "Professor" Barnett for not discussing anything relevant to this debate. As stated before, this debate is incomplete without discussing:
* Smith v Maryland (Warrantless collection of metadata is constitutional)
* 215 of the Patriot Act (Establishes legality of 3rd party collection of business records)
* 702 FISA Act (Leaked information was from FISA court, although the above two points are the important bits)
You want to know where the powers come from? Its there. Too bad you can't trust the "legal expert" in the newspapers to tell you this information :-(