US visa rules hit Asia and Middle East scientists
Two surveys conducted by the Association of American Universities and the American Physical Society (APS) indicate that student enrolments for 2002-3 have clearly been affected by the terrorist attacks last year. For example, the number of visiting researchers on 'J visas', for exchange visitors, dropped by 11 per cent.
"There is an intrinsic tension between advancing scientific knowledge and national security," says Irving Lerch, director of international affairs at the APS. "Right now, the argument has come down on the side of security, but in the long run that can be deleterious to our research system, economy and security development."
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Source: Nature 420, 349 (2002)