Although under US copyright law all federal works are in the public domain, that does not prevent the government from having valid foreign copyrights in its wor

Although under US copyright law all federal works are in the public domain, that does not prevent the government from having valid foreign copyrights in its works that are enforceable abroad. Some more information is available at http://www.cendi.gov/publications/04-8copyright.html#317 http://www.cendi.gov/publications/04-8copyright.html#317.