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The president's press secretary said a plan the White House is pushing would mean taxing goods from Mexico 20 percent to pay for the wall. That would mean American consumers would foot the bill.
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A wall would be expensive — up to $40 billion, according to one estimate. Experts say it's impractical, and a majority of Americans are actually against it. But it was a big Trump campaign promise.
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A campaign promise gets closer to reality with a new executive order Wednesday, one of several changes the president announced in a visit to Homeland Security.