Final answer:
President George W. Bush signed the law awarding the Code Talkers, specifically Native Americans who served in WWII, the Congressional Gold Medal, acknowledging their critical role in using unbreakable codes to assist the U.S. military.
Step-by-step explanation:
The US president who signed a law to award the Code Talkers the Congressional Gold Medal was President George W. Bush. The Code Talkers were Native Americans who utilized their indigenous languages during World War II to transmit secret communications. This effort was particularly famous with the Navajo members of the Marine Corps in the Pacific Theater, whose unbreakable code proved to be a significant advantage for the United States military.
President Bush recognized the crucial contributions of these individuals to the war effort by signing the legislation that awarded them the Congressional Gold Medal, which is one of the highest civilian honors in the United States. This recognition not only honored the Code Talkers for their service but also helped to raise awareness of the important role that Native languages played in securing American military communications during crucial operations