Chaim Weizmann institute was a global success attracting scientists from all over the Diaspora. In 1949 there were 20 researchers, twenty years later there were 400 and 500 students. The Honourable Chaim Weizmann met with United States President Harry Truman and worked to obtain the support of the United States, they discussed emigration, for the establishment of the State of Israel. The President lived at Rehovot, where he regularly received the Prime Minister David Ben-Gurion into his garden. He was denied any actualisation of the political role he had hoped for by the Left. He had to be consoled with the Weizmann
Chaim Weizmann Prime Minister in April 1917. Just after the US President had left, the following morning, Lloyd George invited Weizmann to breakfast at which he promised Jewish support for Britain as the Jews "might be able to render more assistance than the Arabs." They discussed "International Control" the Russian Revolution and US involvement in the future of the Palestine Problem. The complexity of Arab "desiderata" – "facilities of colonization, communal autonomy, rights of language and establishment of a Jewish chartered company". This was followed by a meeting with Carson and the Conservatives (18 Apr) and another at Downing Street on 20