Chemical and Engineering News reported that a bipartisan group of US senators 
plans to introduce new legislation next week aimed at boosting U.S. 
competitiveness in science and technology.  Titled the "Protect America's 
Competitive Edge Act," the proposed legislation will have 20 recommendations 
from an October 2005 report by the National Academy of Sciences.  Among the 
recommendations is the following:
"Provide a 1-year automatic visa extension to international students who 
receive doctorates or the equivalent in science, technology, engineering, 
mathematics, or other fields of national need at qualified US institutions to 
remain in the United States to seek employment. If these students are offered 
jobs by United States-based employers and pass a security screening test, they
 should be provided automatic work permits and expedited residence status.  If
 students are unable to obtain employment within one year, their visas would 
expire."
新法律规定在美获得博士学位国际学生可以延期签证一年
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                    回复:新法律规定在美获得博士学位国际学生可以延期签证一年
                     -GCrequest- 
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                        02/01/2006 postreply
                                                13:11:40
                    
                    
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                    恐怕估计至少3,4年
                     -wliu32003- 
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                        02/01/2006 postreply
                                                13:54:39