Many law enforcement leaders are acting as if no crimes can be solved unless all cell phones are made more vulnerable.
Before Telephones; you could tell who someone was communicating with by monitoring their physical movements on foot.
Telephones would have made that harder..... Until wiretapping became a thing that was allowed.
Ubiquitous technology, And "Ease of Snooping" made law enforcers' lives easier at investigating crimes than it ever was before Telephones were invented.
At this point they are "used to it", attached to it, and probably feeling almost entitled to the right to eavesdrop on demand.
Instead of merely opposing them; however..... I propose that we as technologists should put together a list of "Recommended Alternative investigatory techniques"
For example: Communications may be encrypted, BUT service providers can still tell you Which Cell phone is Talking with which Cell phone.
And if you can get a court order, then require service provider and phone manufacturer to cooperate with planting a "Hardware snooping device" on the phone itself.
For example, a special hardware chip that can be covertly installed in the phone for info. gathering after a warrant is issued on a suspect.
Or a capability to clone their phone... E.g. Restore a backup from the cloud, and replace the suspect's original phone with a specially modified replica that will log the suspect's passphrase.
In either case, law enforcement covertly gain physical access to hardware, for at least a few minutes.