You can, as long as you advise them 100% of the time that they are 100% correct 100% of the time.
A Yes Man seems to be the qualification required for crypto expertise in some gov circles. And it is worrying that so many of our leaders have not yet grasped the very basic concept that you can't have safe backdoors guaranteed to be unusable by criminals through some magic fairy dust. Wherever else you stand on the surveillance/privacy divide wrt terrorism prevention, how can supposedly smart people just not understand that basic fact? Or take the word of the experts in the field?
Biting the hand that feeds IT
