On November 15, President George W. Bush signed The Code Talkers Recognition Act of 2008, recognizing every Native American code talker who served in the United States military during World War I or World War II (except for the already-awarded Navajo soldiers) with a Congressional Gold Medal.
Under the Act, gold medals are struck for each Native American tribe that had a member who served as a code talker. The Gold Medal was held by the Smithsonian Institution. Silver duplicate medals were presented to the specific code talkers, their next of kin, or other personal representatives. Bronze duplicates became available for sale to the public from the U.S. Mint.
Memo from WWII Commander General Vogel to the Commandant, U.S. Marine Corps, Re: Enlistment of Navahos for Use in Coded Communications
March 6, 1942.
Vogel notes that the Navajo was the only tribe that had not yet been infiltrated by Germans posing as students, art dealers, and anthropologists in order to study the various tribal dialects of American Indians.