After reading the article at xda-developers.com/feature/exemption-legalizing-rooting-and-jailbreaking-will-expire-eff-wants-to-renew-it/ I'm concerned that I can't voice my objection to the thought that this law may not being renewed.
Surely the US government can't dictate what I, as a Briton, can and cannot do with my phones. Unfortunately this appears to be exactly what they're trying to do.
As a foreign government is trying to dictate what someone out of their jurisdiction can and cannot do I am hereby declaring myself immune from such an absurd law. If the US government don't like it they can track me down using my IP address and we'll discuss it in person. Until that time I'll assume they're fine with my decision.