Wilson had not stopped the submarine campaign, but he won agreement that unarmed merchant ships would not be sunk without warning; and most importantly he had kept the U.S. out of the war.
Wilson had not stopped the submarine campaign, but he did get agreement that unarmed merchant ships would not be sunk without warning. While German submarines were killing sailors and civilian passengers, Wilson demanded that Germany stop, but he kept the U.S. out of the war.