A few days ago a notice of inquiry was issued by the US Copyright Office to determine what exemptions there should be from the prohibition against circumventing of technological measures that control access to copyrighted works. US copyright law requires this to happen every 3 years, last time exemptions were granted for amongst others ebooks that have text-to-speech disabled and cellphones that disallow installing software.
So if you're American and think it should be allowed to crack the DRM on ebooks, now's the time to tell the government, just be sure to argue without resorting to catchphrases like "information wants to be free" or arguments that are not based on non-infringing use like "I already have the paper book, I deserve a free copy of the ebook."
http://www.gpo.gov/fdsys/pkg/FR-2011...2011-25106.htm