US Presidency
1870

That the neutral flag covers enemy's goods, with the exception of contraband of war. Third. That neutral goods, with the exception of contraband of war, are not liable to capture under the enemy's flag. Fourth. That blockades, in order to be binding, must be effective that is to say, maintained by a force sufficient really to prevent access to the coast of the enemy; and that, although the United States have not adhered to the declaration of 1856, the vessels of His Majesty will not seize enemy's property found on board of a vessel of the United States, provided that property is not contraband of war.