FILE - In this March 3, 2005, file photo, a Chinese paramilitary police guard checks the documents of visa seekers outside the U.S. embassy in Beijing before letting them in. Chinese tourists, already among the fastest-growing and highest-spending groups of international visitors to the United States, are poised to make an even bigger impact, thanks to a rule change that would allow visitors to get visas valid for 10 years. (AP Photo/Greg Baker, File)
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