Richard Nixon actually said...
Now, Therefore, I, Richard Nixon, President of the United States of America, do by this proclamation suspend, as to all contracts entered into on or subsequent to the date of this proclamation and until otherwise provided, the provisions of the Davis-Bacon Act of March 3, 1931, as amended.
Context
Proclamation 4031—Proclaiming the Suspension of the Davis-Bacon Act of March 3, 1931
02/22/1971