A Discover America survey has found that by a margin of more than two to one, the US ranked first among 10 destinations that included Africa and the Middle East as the most unfriendly to international travelers.

More than half of those polled said immigration officials are rude, and that the US government does not want their travel business.

Almost two-third came up with a concern that might surprise Americans -- foreign tourists were worried they will be detained for hours because of a simple mistake or a misstatement at a US airport.

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