Back in 2010, the Library of Congress issued a rulemaking statement that exempted jailbreaking, rooting, and otherwise unlocking mobile devices from DMCA anti-circumvention laws. For all intents and purposes, this made these activities completely legal, and stopped Apple from making all those threats against the jailbreak community. In 2012, that exemption is set to expire unless it is renewed, and the EFF wants to make sure that it is.