Chinese Cryptologists Get Invitations to a U.S. Conference, but No Visas
By JOHN MARKOFF
Published: August 17, 2005
SAN FRANCISCO, Aug. 16 - Last year a Chinese mathematician, Xiaoyun Wang, shook up the insular world of code breakers by exposing a new vulnerability in a crucial American standard for data encryption. On Monday, she was scheduled to explain her discovery in a keynote address to an international group of researchers meeting in California.
But a stand-in had to take her place, because she was not able to enter the country. Indeed, only one of nine Chinese researchers who sought to enter the country for the conference received a visa in time to attend.
Although none of the scientists were officially denied visas by the United States Consulate, officials at the State Department and National Academy of Sciences said this week that the situation was not uncommon.
Lengthy delays in issuing visas are now routine, they said, particularly for those involved in sensitive scientific and technical fields.
The visa snag angered organizers of the annual meeting of the International Cryptology Conference, who argued that restrictions originally created to prevent the transfer of advanced technologies from the United States are now having the opposite effect....
http://www.nytimes.com/2005/08/17/business/worldbusiness/17code.html