In August of 1963, representatives of the United States, Soviet Union, and Great Britain all signed the "Limited Nuclear Test Ban Treaty." This treaty limited/prohibited the testing of nuclear weapons in outer space, underwater, or anywhere in the atmosphere.
It would be the "a. Social Security Administration" that was begun during the New Deal and still exists today, since many people rely on this in order to retire later in life.
He didn't like the constitution much and preferred Articles of Confederation.