Lyndon Johnson actually said...
Captain of the Port may cause to be inspected and searched at any time any vessel, waterfront facility, or security zone, or any person, article, or thing thereon or therein, within the jurisdiction of the United States.
Context
Executive Order 11249—Amending Regulations Relating to the Safeguarding of Vessels, Harbors, Ports, and Waterfront...
10/09/1965