Four delegates to a join ISO/IEC meeting were refused visas: The four delegates (out of six on the team) represented the technical side of the Chinese WAPI (Wireless Authentication and Privacy Infrastructure) security standard which was widely criticized last year with complaints from U.S. businesses manifesting themselves in a cabinet-level statement from the U.S. WAPI is a native Chinese standard that the country planned to keep proprietary and would require all WLAN products to incorporate for sale within China. Non-Chinese firms would have to partner with domestic counterparts that were approved to add the standard. China eventually backed off on their WAPI requirement, for now. The reason for the visa being denied was not given.