There is no doubt a list (metaphorical if not physical) of law
   enforcement techniques that are legal but would either be widely
   questioned, or potentially adjudicated against.

   Through various means, the US government likely wishes those techniques
   not to be public.

   The US government is making me obviously aware of those techniques.

   The US government is run by morons.

   Sent with [1]ProtonMail Secure Email.

References

   1. https://protonmail.com/