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Silicon Valley talent dream tied to immigrant hopes

A member of the audience takes a picture of US President Barack Obama with her iPad at a campaign event in Chicago on August 12, 2012. Silicon Valley's long crusade to break open doors to America for foreigners with key technology skills hinges on a politSilicon Valley's long crusade to break open doors to America for foreigners with key technology skills hinges on a political battle in Washington over broader immigration reform. For more than a decade, the tech sector has been struggling to get more visas and green cards for immigrants with engineering, math or science skills.