Actually that would be the best outcome from my perspective (jealous of civil rights, not fond of drugs), but the goobermints, federal state and lokel, seem to be incapable of operating in the mode you describe.
That is why the courts have the exclusionary rule of evidence. Evidence obtained illegally can be suppressed. The court basically said that was the only way they could keep the cops honest. A pretty telling comment on the polizei.
A more “liberal” court may actually start cutting back further on illegal cop activity, such as pretextural stops.
parsy, who used to like Dirty Harry