There are some very authoritarian laws about movable wireless networks in USA. How will those affect the librem5 and its users?
I do not know what secret functions this chip has other than whats mentioned on wikipedia https://en.wikipedia.org/wiki/Enhanced_9-1-1 chip, but I suspect anyone who mass produces phones is under https://en.wikipedia.org/wiki/Gag_order not to tell parts of what they have done against privacy and security.
If it contains an e911 chip, will there be a hardware switch to disconnect it, like there is for microphone etc? How about a faraday cage that slides around it with the switch, to prevent it from being tracked while disconnected? Can I have a log of all the bits which move between it and the device and run a CPU controlled firewall between them? Is the e911 chip needed to connect to mobile Internet?