Why Donald Trump Decided to Back Off Nafta Threat

“It was a trial balloon, but it didn’t work,” said Mexican economist Luis de la Calle, a trade expert who had been a senior negotiator on the pact. “Next time, nobody will believe it. People start to figure things out.”

But Mr. Trump said in the interview that he still holds his strongest card. “We’ll terminate Nafta if we’re unable to make a deal, but hopefully we won’t have to do that.”