President Obama signed into law the 2009 Consolidated Appropriations Act, which includes a provision making the National Institutes’ of Health (NIH) Public Access Policy permanent. The NIH Revised Policy on Enhancing Public Access requires eligible NIH-funded researchers to deposit electronic copies of their peer-reviewed manuscripts into the National Library of Medicine’s online archive, PubMed Central (PMC). Full texts of the articles are made publicly available and searchable online in PMC no later than 12 months after publication in a journal. The NIH policy was previously implemented with a provision that was subject to annual renewal. Since the implementation of the revised policy the percentage of eligible manuscripts deposited into PMC has increased, with over 3,000 new manuscripts being deposited each month. The PubMed Central database is a part of a set of public database resources at the NIH.