Kenya African National Union nonetheless decided to remove all provisions of a federal nature from the constitution. Kenya became independent on December 12, 1963, and the next year became a republic within the Commonwealth. Jomo Kenyatta, head of the Kenya African National Union, became Kenya's first president. KADU dissolved itself voluntarily in 1964 and joined KANU after a strong lobbying by Tom Mboya. A small but significant leftist opposition party, the Kenya People's Union (KPU), was formed in 1966, led by Jaramogi Oginga Odinga, a former vice president and Luo elder. The KPU was banned and its leader detained after political unrest related to
Jomo Kenyatta Ross briefing him on how to deal with the Colonial Office. Kenyatta became friends with Ross' family, and accompanied them to social events in Hampstead. He also contacted anti-imperialists active in Britain, including the League Against Imperialism, Fenner Brockway, and Kingsley Martin. Grigg was in London at the same time and, despite his opposition to Kenyatta's visit, agreed to meet with him at the Rhodes Trust headquarters in April. At the meeting, Kenyatta raised the land issue and Thuku's exile, with the atmosphere between the two being friendly. Following the meeting, Grigg convinced Special Branch to monitor Kenyatta. Kenyatta developed