4th Amendment.
Feds have the power to search and seize. They do NOT have the power to compel an unwilling third party to make sense of what was seized.
3rd Amendment.
Feds are expressly prohibited from positioning government agents, real or virtual, for arbitrary monitoring and intimidation of private activity.
https://www.law.cornell.edu/uscode/text/18/2518
One of many. Please, I’m not talking about APPLE’S end. I’m talking about LIBERTY.