The most violent areas tend to be in the north, along the U.S. border. Although they emphasize that their facilities have remained safe, U.S. executives still exercise caution. When senior U.S. officials visit they take precautions, like not bringing U.S.-licensed vehicles across the border and following a strict hotel-to-factory travel regime. Queretaro is regarded as safe, which is one reason it has had such success attracting foreign firms. Chihuahua had a spate of violence in 2009 but it is said to have settled down.
Still, one manager who makes frequent trips there hires a trusted driver, just to be safe.
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