Richard Nixon actually said...
Now, Therefore, I, Richard Nixon, President of the United States of America, acting under and by virtue of the authority vested in me by the Constitution and the statutes, including the Military Selective Service Act, as amended, do proclaim that the registration of persons shall continue to be accomplished in accordance with the provisions of the aforesaid proclamations except (1) that aliens excluded from the requirement of registration by Public Law 92-129 approved September 28, 1971 shall not be registered, and (2) that persons required by the aforesaid proclamations to be registered on the day they attain the eighteenth anniversary of the day of their birth or within five days thereafter shall be registered on the day they attain the eighteenth anniversary of the day of their birth or within the period of sixty days commencing thirty days before such date.
Context
Proclamation 4101—Supplementing Proclamations Providing for Registration Under the Military Selective Service Act, as Amended
01/12/1972