Travelerscoming to the us from visa waiver countries for business purposes, 90days or less, may be eligible to visit the us without a visa.

游客来到美国免签证国家用于商业目的，90天以内，可以申请访问美国无签证。

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One way to easily expedite the visa process is to add Brazil, Chile, Poland and other countries to the Visa Waiver Program.

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Many European countries have visa-waiver agreements with the US, making it easier for their citizens to enter and easier for them to blend in.

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Now it appears the U.S. has finally admitted that the technology is unreliable, and countries affected by the Visa Waiver are scrapping their plans to comply with legislation that will likely be dropped.

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