Woodrow Wilson actually said...
And I further direct that on the approaching ceremonial visit of the Secretary of State to certain States of South America, the above prescribed flag shall be displayed on the national vessel which conveys him, so long as he shall be on board the ship, and upon the launch which may convey him to the shore when his communication therewith becomes necessary in the discharge of the public mission with which he may be charged.
Context
Executive Order 3360—Official Flag for Secretary of State
11/27/1920