Walter Joseph Hickel
Walter Joseph "Wally" Hickel (born August 18, 1919) is an American politician who was elected Governor of Alaska in 1966, but resigned in 1969 to serve as Secretary of Interior under President Richard Nixon. He was elected to a second term as Governor in 1990. Although a Republican, Hickel was a strong environmentalist. As Governor, he did not advocate offshore oil drilling.
As Interior Secretary he wrote President Nixon a letter criticizing his Vietnam War policy. Nixon fired Hickel over the letter.