Postal Service almost never denies mail-surveillance requests
Why would they?  They're a de-facto government entity.  They have nothing to lose by honoring the requests and a lot to lose if they don't and "something bad happens" as a result.<p>That's not to say that I approve of this behavior.  Just that it shouldn't be surprising.  There is no oversight.  If mom and dad are gone, why not have some cookies?