Found these quotes today.

Theodore Roosevelt
May 11, 1918, letter to Cleveland Hoadley Dodge
. . . the Armenian massacre was the greatest crime of the war, and the failure to act against Turkey is to condone it . . . the failure to deal radically with the Turkish horror means that all talk of guaranteeing the future peace of the world is mischievous nonsense.

Herbert Hoover
The Memoirs of Herbert Hoover, 1952
The association of Mount Ararat and Noah, the staunch Christians who were massacred periodically by the Mohammedan Turks, and the Sunday School collections over fifty years for alleviating their miseries—all cumulate to impress the name Armenia on the front of the American mind.

Jimmy Carter
May 16, 1978, White House ceremony
It is generally not known in the world that, in the years preceding 1916, there was a concerted effort made to eliminate all the Armenian people, probably one of the greatest tragedies that ever befell any group. And there weren't any Nuremberg trials.

Ronald Reagan
April 22, 1981, proclamation
Like the genocide of the Armenians before it, and the genocide of the Cambodians which followed it, . . . the lessons of the Holocaust must never be forgotten.
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