The USA was also troubled when its President became involved in a scandal and was forced to resign. On 17 June 1972 five men broke into the Democratic Party Headquarters in the Watergate Building. The five were arrested. Later two other men, both former White House officials, were also arrested. All the men worked for the Committee for Re-election of the President or CREEP. However President Richard Nixon denied that his administration had anything to do with the break in. The seven men were all convicted but at the sentencing in March 1973 one of them claimed the White House had arranged a 'cover up' of its involvement in the break in. Subsequently investigations revealed that a number of White House staff were involved in planning the break in and in arranging a 'cover up'. Nixon firmly denied that he was personally involved in any attempted 'cover up'. However he refused to surrender tapes of conversations in his private office, which would prove his guilt or innocence. In April 1974 he agreed to hand over edited versions. In July 1974 the Supreme Court ordered him to hand over all relevant tapes. On 5 August 1974 Nixon surrendered tapes which made it clear that he was involved in an attempted 'cover up'. Having lost all support Nixon resigned on 9 August 1974. After Vietnam and the Watergate scandal the USA suffered a recession in the mid-1970s. Unemployment rose to 8.5% in 1975. Despite its troubles the United States remained by far the richest and most powerful nation in the world.