Even though the United States government grants copyrights, the government does not retain copyright to its own works. A work of the United States government, as defined by the United States copyright law, is “a work prepared by an officer or employee” of the federal government “as part of that person’s official duties.” In general, under section 105 of the Copyright Act, such works are not entitled to domestic copyright protection under U.S. law and are therefore in the public domain.