Presentation of the Medal of Honor was made at the White House by President Harry S. Truman on November 1, 1950. (Later that same day, two Puerto Rican nationalists attempted to assassinate Truman across the street at Blair House.) Chambers had been recommended for the award on April 7, 1945, following his evacuation, seriously wounded, from Iwo Jima. He initially received the Navy Cross for his actions, but upon re-examination of the original recommendation with additional evidence, his award was upgraded to the Medal of Honor a few years later.