One of the things that irks me about current US policing is that police use tactics which imply they have more authority than they have (e.g. administrative sub

One of the things that irks me about current US policing is that police use tactics which imply they have more authority than they have (e.g. administrative subpoenas, demands for information, demands with withhold information, etc) and never (that I know of) get into legal trouble for doing so... In fact in the current system such demands are not only legal but are rewarded. Police will call the resulting evidence "voluntary" even if the company had no idea it was volunteering anything (and thought, often because they didn't hire a lawyer, it was required). Small companies in particular who don't have a staff lawyer, and who don't want to spend a thousand dollars in fees to check an incoming request, are particularly susceptible. Even if they do have a lawyer on retainer, that lawyer may not specialise in this type of law.