The White House is pressuring companies to not implement end to end encryption (see, for example, iMessage). Anything short of end to end encryption is considered broken by many people for communications between two parties.<p>The only way the government can get the equivalent of a wire tap is if there is no end to end encryption. What police do not want is to need to go back to pre-telephone detective work where they need to determine the location at which the parties will communicate (with modern communications there are of course at least two locations) and compromise that location to spy on the supposed criminals.