Whatever method is available to American law enforcement is eventually going to become available to Chinese spies. The record of keeping this kind of secret is

Whatever method is available to American law enforcement is eventually going to become available to Chinese spies. The record of keeping this kind of secret is abysmal. If by no other means, then by social engineering the same access that local police departments were supposed to have. Salt Typhoon - which this discussion is about - is an example. Tools for tracking people that were supposed to be for our side, turn out to also be used by the Chinese. Plus the act of creating partial security often creates new security holes that can be exploited in unexpected ways. Either you build things to be secure, or you have to assume that it will someday be broken. There is no in between.