English: Hagerty Incident: The Treaty of Mutual Cooperation and Security between the United States and Japan had been signed in Washington on 19 January 1960. When the pact was submitted to the Japanese National Diet for ratification on 5 February it became the subject of bitter debate over the Japan-United States relationship and the occasion for violence in an all-out effort by the leftist opposition to prevent its passage. It was finally approved by the House of Representatives on 20 May. Japan Socialist Party deputies boycotted the lower house session and tried to prevent the LDP deputies from entering the chamber; they were forcibly removed by the police. Massive demonstrations and rioting by students and trade unions followed. These outbursts prevented a scheduled visit to Japan by President Dwight D. Eisenhower and precipitated the resignation of Prime Minister Nobusuke Kishi, but not before the treaty was passed by default on 19 June 1960. On 10 June 1960, the press secretary of the U.S. President Eisenhower, James Campbell Hagerty, arrived at Haneda Airport, Tokyo (Japan), to plan the upcoming visit of the president. While attempting to leave the airport for the U.S. embassy, Hagerty’s car was immobilized for an hour before he could be retrieved by a U.S. Marine Corps HUS-1 helicopter from Marine Medium Helicopter Squadron 362.