Recent DOJ opinion (that a court gave warrant for) that an AP author was party to a crime while (/because of) trying to avoid surveillance.
https://www.documentcloud.org/documents/700577-051413-letter...
A reporter was being investigated for having access to classified information, and the toll records (what number called or was called, and for how long the call lasted) were subpoenaed.
[Via http://www.theverge.com/2013/5/14/4331108/attorney-general-d... ]