MEXICO CITY, March 3 (Reuters) - Donald Trump may be president of the United States but his words do not necessarily carry the weight of the U.S. government at the biggest trade shake-up he is pushing. Sometimes, it is better to block them out and carry on, officials say.
Negotiations between the United States, Canada and Mexico to redraw the North American Free Trade Agreement (NAFTA) were clouded this week by Trump's plan to slap 25 percent tariffs on steel imports and claims that "trade wars are good, and easy to win."
Participants at the talks have come to expect disruptions by Trump, ranging from his depictions of the United States as a victim of Canada and Mexico, to threats to dump the 24-year-old accord he has called a "disaster."
Several officials privately expressed frustration at his latest broadsides during the seventh round of NAFTA talks in Mexico, where Trump has regularly raised hackles by insisting on building a border wall he says Mexicans will pay for.
But they also said that Canadian, Mexican and the technical staff of U.S. Trade Representative (USTR) Robert Lighthizer have remained focused on the task of overhauling the accord.
"Our position on all this is: don't react. Stick with the facts," said an official close to the talks when asked how a man praising trade wars could be relied on to rework a trade deal.
"Stick with the official positions of the government, and above all with our direct counterparts, USTR, the Commerce Department, and take serious decisions on that basis," the official added, speaking on condition of anonymity.
Negotiators concluded a chapter on regulatory practices earlier this week, and officials say they may be able to finish a handful more before ministers from the United States, Mexico and Canada meet for talks in Mexico City on Monday.
The official also expressed the view that the fact that the United States remained at the negotiating table was "a win."
"We have to be honest and say that irrespective of the political noise, we're in a better place than we were six or three months ago," the official told reporters. "In other words, I think the likelihood of the United States pulling out abruptly is lower today than it was six months ago."
That said, chief Canadian negotiator Steve Verheul said talk of trade wars continued to be a distraction.
"It's a lot of extra work," he told Reuters on Saturday.
Trump has talked frequently of the need to be unpredictable and Carlos Pascual, a former U.S. ambassador to Mexico, said the president's use of Twitter aimed to fuel uncertainty.
"Because (the tweets) are from him, they are not shaped by trade-offs in a government interagency process," he told Reuters. "So the world is always left to wonder - is this the conclusion of the policy process, or just the first salvo based on emotion, instinct and political calculus?"
The mood in Mexico for the latest round was dampened before the start when it surfaced that tentative plans for a meeting between Trump and President Enrique Pena Nieto had been shelved due to a joint phone call that soured over the planned wall.
A former high-level Mexican diplomat said that the latest row fitted perfectly into the pattern of Trump disruptions ahead of NAFTA talks, and that the government needed to deny him the space to create them.
"It's wrong to think you can have a normal, calm relationship with Trump, he's not like that," the former official said, speaking on condition of anonymity. (Additional reporting by David Ljunggren and Lesley Wroughton; Editing by Daniel Wallis)