The Blue Book of Basic Documents, usually referred to as just the Blue Book, is Girl Scouts of the USA’s governance “bible.” It contains all of the basic documents which specify how Girl Scouting is governed. Contents include the GSUSA Constitution, Bylaws, Policies, Credentials, Criteria and Standards for an Effective Girl Scout Council, and the Congressional Charter for GSUSA. As such, it is the “go to” reference for many governance topics applicable to both the national organization and councils. The Blue Book gets revised as needed based on changes made by GSUSA’s governing bodies, the National Council and the National Board of Directors. The Congressional Charter can be changed only by the Congress of the United States of America.