Whether the differences from the "Russell" situation are of degree or of kind ... I think they clearly require a different result. Where the Government's agent deliberately sets up the accused by supplying him with contraband and then bringing him to another agent as a potential purchaser, the Government's role has passed the point of toleration ... The Government is doing nothing less than buying contraband from itself through an intermediary and jailing the intermediary ... There is little, if any, law enforcement interest promoted by such conduct; plainly it is not designed to discover ongoing drug traffic. Rather, such conduct deliberately entices an individual to commit a crime. That the accused is "predisposed" cannot possibly justify the action of government officials in purposefully creating the crime. No one would suggest that the police could round up and jail all "predisposed" individuals, yet that is precisely what set-ups like the instant one are intended to accomplish.