Unless by law all data collected has to be written to a public blockchain that's able to be reconciled to data collected and released -- the FBI, DEA, etc. will

Unless by law all data collected has to be written to a public blockchain that's able to be reconciled to data collected and released -- the FBI, DEA, etc. will always be deleting information; number of reasons why they would be deleting information, but the point is that this is not okay.