Lyndon Johnson actually said...
I authorize you to perform the functions vested in the President under the provisions of sections 5 (b) and (c) of that Act, as may be required to provide assistance by the United States in the World Health Organization International System to Monitor and Report Adverse Reactions to Drugs.
Context
Letter to the Secretary, HEW, Delegating Authority in Connection With the Worldwide Drug Reaction Monitoring System.
05/08/1967