US Presidency
1851

The maritime rights of the United States are founded on a firm, secure, and well defined basis; they stand upon the ground of national independence and public law, and will be maintained in all their full and just extent. The principle which this Government has heretofore solemnly announced it still adheres to, and will maintain under all circumstances and at all hazards. That principle is that in every regularly documented merchant vessel the crew who navigate it and those on board of it will find their protection in the flag which is over them. No American ship can be allowed to be visited or searched for the purpose of ascertaining the character of individuals on board, nor can there be allowed any watch by the vessels of any foreign nation over American vessels on the coast of the United States or the seas adjacent thereto.