"(c) Other Rights, Etc., Not Affected. — (1) Nothing in this section shall affect rights, remedies, limitations, or defenses to copyright infringement, including fair use, under this title."
IANAL, but that would not protect you from the DMCA provisions that make it a crime to distribute tools designed for breaking DRM, even if you intend such tools to be used for fair use purposes.
http://www.copyright.gov/title17/92chap12.html#1201