We're talking about 17 USC § 1201 - Circumvention of copyright protection systems (http://www.law.cornell.edu/uscode/text/17/1201 http://www.law.cornell.edu/usc

We're talking about 17 USC § 1201 - Circumvention of copyright protection systems (http://www.law.cornell.edu/uscode/text/17/1201 http://www.law.cornell.edu/uscode/text/17/1201), the anti-circumvention part of the DMCA, most importantly 1201(a) Violations Regarding Circumvention of Technological Measures (with the associated 1201(b) Additional Violations). What you're talking about is USC 512 (http://www.law.cornell.edu/uscode/text/17/512 http://www.law.cornell.edu/uscode/text/17/512), 17 USC § 512 - Limitations on liability relating to material online These are more or less completely unrelated apart from being introduced in the same legislative act (which also did a fair number of other changes to the law.)