Governments of United States of America and France, Convention of 1800 — Treaty of Mortefontaine (1800)
“ And whereas it frequently happens that Vessels sail for a port or place belonging to an enemy without knowing that the same is either besieged, blockaded, or invested, it is agreed that every vessel so circumstanced may be turned away from such port, or place, but she shall not be detained, nor any part of her cargo if not contraband be confiscated, unless after notice of such blockade or investment, she shall again attempt to enter: but she shall be permitted to go to any other port or place she shall think proper. ”
