Little by little the usurper was being isolated. By moral pressure every day his power and prestige were perceptibly crumbling. His collapse was not far away when the President declared: "We shall not, I believe, be obliged to alter our policy of watchful waiting." The campaign of Woodrow Wilson to force Huerta finally triumphed. On July 15th, Huerta resigned and departed from Mexico. Wilson's humanity and broad statesmanship had won over the system of cruel oppression for which the "unspeakable Huerta" had stood. During the Huerta controversy a thing happened which aggravated the Mexican affair, and which culminated in the now-famous Tampico incident. On April 9, 1914, a paymaster of the United States steamship Dolphin landed at the Iturbide bridge at Tampico with a whaleboat and boat's crew to obtain supplies needed aboard the Dolphin. While loading these supplies the paymaster and his men were arrested by an officer and squad of the army of General Huerta. Neither the paymaster nor any of the boat's crew were armed. The boat flew the United States flag both at the bow and stern. Two of the men were in the boat when arrested and hence were taken from United States "soil." Admiral Mayo, senior American officer stationed off Tampico, immediately demanded the release of the sailors. Release was ordered after the paymaster and the sailors had been detained about an hour. Not only did Admiral Mayo demand the release of the sailors but insisted on a formal apology by the Huerta Government consisting of a twenty-one-gun salute to the flag. During the critical days following the refusal of Huerta to accede to Admiral Mayo's request the State Department was notified that there would arrive at Vera Cruz the German steamship Ypirango about to deliver to Huerta 15,000,000 rounds of ammunition and 500 rapid-fire guns. About 2.30 o'clock in the morning of the 21st day of April, 1914, the telephone operator at the White House called me at my home, and rousing me from bed, informed me that the Secretary of State, Mr. Bryan, desired to speak to me at once upon a very urgent and serious matter. I went to the telephone and was informed by Mr. Bryan that he had just received a wireless informing him that the German steamship Ypirango, carrying munitions would arrive at Vera Cruz that morning about ten o'clock and that he thought the President ought to be notified and that, in his opinion, drastic measures should at once be taken to prevent the delivery of these munitions to the Customs House at Vera Cruz. While Mr. Bryan and I were talking, Mr. Daniels, the Secretary of the Navy, got on the wire and confirmed all that Mr. Bryan had just told me. Soon the President was on the 'phone, and in a voice indicating that he had just been aroused from sleep, carried on the following conversation with Messrs. Bryan, Daniels, and myself: Mr. Bryan reported to him the situation at Vera Cruz and informed him of the receipt of the wireless: