Re: I sense political meddling.
You don't need PRISM to filter one set of emails by whether they were sent to or from clintonemail.com and whether they are not in a list of emails you already know of from clintonemail.com.
That can be coded from scratch and tested in minutes, given nothing but a directory of email files, in a variety of computer languages. It's probably about five lines of PERL, or maybe 15 lines of python that you spent some time formatting to make it look nice.
Given the Weiner email batch, which is electronic and easily scanned, just generate the list of emails to and from clintonemail.com (by To:, Cc:, Bcc:, From: and Sent-From: headers). Then save the list of Message-Id: headers, and compare that list with the Message-Id: headers you already know of from the batch you have spent a year already looking at, and spit out the messages without a Message-Id: match. It is literally as easy as I am describing.
I would be surprised if the list it spits out was more than a few thousand. I wouldn't be surprised if the list was empty.
The idea that the FBI doesn't have any tools other than PRISM to do this is entirely laughable.
Yes, they would have had to wait until the court gave them the go-ahead. They had the go-ahead by last Monday. They should have been able to reach initial conclusions by late Monday afternoon.