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The Librarian of Congress is the head of the Library of Congress, appointed by the President of the United States with the advice and consent of the United States Senate, and serves as the chief librarian of all the sections of the Library of Congress. One of the responsibilities of the Librarian of Congress is to appoint the U.S. Poet Laureate. The Librarian of Congress can also announce any class of copyrighted works for which the Librarian has determined that certain noninfringing uses of those copyrighted works are, or are likely to be, adversely affected by the Digital Millennium Copyright Act's prohibition against circumventing technological access protections on the works. That class of works will then be exempt from liability under the DMCA, subject to the conditions of the Librarian's ruling, for the ensuing 3-year period.