I would also consider the NSA meddling with Bitlocker and RSA behind the curtain to be conceptually equivalent.
https://www.schneier.com/blog/archives/2015/03/can_the_nsa_b...
http://gizmodo.com/nsa-paid-security-firm-10-million-bribe-t...
https://www.schneier.com/blog/archives/2015/03/can_the_nsa_b...
http://gizmodo.com/nsa-paid-security-firm-10-million-bribe-t...