Donald Trump's NAFTA approach is doomed

President Trump's approach to renegotiating NAFTA is plagued by political and policy errors.
His push for a Mexico-only deal is politically and legally unworkable — he must seek a three-country deal.
But his unwise push to weaken investor protections will be blocked by interests in Canada and the US.
He must change his approach and find ways to strengthen the agreement in all three parties' interest.The United States and Mexico came to terms on a new “agreement” last month tha