"in court" may have been a bit too strong, but police do generally have carte blanche to the entirety of someone's private life. For most people the police show up, confiscate any items that might possibly be evidence, damaging them or at least denying their use for several years.

Due to the severe corruption of our institutions, the investigators in this case are the public. A time period of a decade is more than enough time to recall all the HUMINT assets that might be damaged by such disclosure. And frankly the blame for any forced transparency should fall squarely on the shoulders of the NSA for having bundled so much under one blanket of secrecy.