I am not sure where to put this. Its for homework, but its a research paper. we have this topic "If in 1905 we had closed out American borders and ended immigration to our shores, choose one scientist, mathematician, engineer, or architect that would have been prevented from coming to the USA. Explore how this would have affected their acheivements, and how the world would be different today?" I thought of Einstein immediately, but sinceforth have been stumped for ideas. Any help? I really want to do a scientist, mathematician or engineer, not so much an architect. The paper has to be around 6-8 pages long so I also need to find information on them fairly easily. PS - I am sorry about not knowing where to post this, If it needs to be moved somewhere more appropriate, please direct me on how to move it.