I don't think you've answered the original question, though. Why is that better than e.g. prosecuting detectives for their illegal conduct? Because in a sense p

I don't think you've answered the original question, though. Why is that better than e.g. prosecuting detectives for their illegal conduct? Because in a sense police in the U.S. don't need a warrant right now — sure, the evidence might be thrown out, but they effectively face no accountability for breaking the law.