A charter is a document of incorporation. In the U.S.A., corporations typically are chartered through states.
The Red Cross’s national organization was chartered via federal statute on January 5, 1905.
Congress modified the charter most recently amended the charter in 2007. See P.L. 110-26, which became law May 11, 2007.
The most up-to-date version of the Red Cross’s charter may be found on the website of the House of Representative’s Office of the Law Revision Counsel.
Also of note: In October 2006, the Red Cross published a report that advocated for revisions to its congressional charter: American Red Cross Governance for the 21st Century: A Report of the Board of Governors.