Earlier quoted context omitted.
A cop telling you it's okay to do something, and then getting arrested for it, might be one of the only times you can correctly claim entrapment.
So all Jessie Pinkman's got to do is ask the under cover police if it's okay to sell them meth and then they can't be arrested for it? Entrapment is reserved for the police going above and beyond, eg "sell me meth or I'll kill your dog" where it can be argued that the entrapped normally would not do the crime.
No, this is about on duty police in uniform saying it's okay.