The National Security Strategy (NSS) is a document prepared periodically by the executive branch of the government of the United States for Congress which outlines the major national security concerns of the United States and how the administration plans to deal with them. The legal foundation for the document is spelled out in the Goldwater-Nichols Act. The document is purposely general in content (contrast with the National Military Strategy, NMS) and its implementation relies on elaborating guidance provided in supporting documents (including the NMS).