The U.S. border with Mexico is seen in Nogales, Arizona. "President Trump should take a good look at the effects of whatever he does, because he's going to end up with a real problem," said Nogales Mayor John Doyle, who joined other lawmakers from Arizona, New Mexico and Texas in denouncing the import tax plan in letters to U.S. lawmakers.
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Trucks and cars cross the border from Mexico into the U.S. in Nogales, Arizona.
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The U.S. border with Mexico is seen in Nogales, Arizona.