Here's the latest version: http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?...
A part I'm concerned about: "(d) Any request by a government agency to interrupt communications service utilizing a technological solution required by this section is subject to Section 7908 of the Public Utilities Code."
Skip to 7908 here: http://www.leginfo.ca.gov/cgi-bin/displaycode?section=puc&gr...
So, this kill-switch may not be 100% controlled by the device owner.
I'd be OK with a required/opt-out kill-switch only if I was the only person that could possibly brick my device with it. (That's a hard problem to make user-friendly and educate people about. A private key I create and store physically/securely somehow?)
Otherwise, I don't really own my device.
See also: http://en.wikipedia.org/wiki/Trusted_Computing "TC is controversial as the hardware is not only secured for its owner, but also secured against its owner."