Investing.com - The US is threatening to pull out of the North American Free Trade Agreement, unless major changes are made.Talks between the US, Canada and Mexico are due to start on August 16.Fighting to cut the US trade deficit are:Commerce Secretary: Wilbur Ross,Trade Representative: Robert Lighthizer &Assistant USTR for Western Hemisphere: John Melle.US President Trump has called Ross one of the world’s greatest negotiators.In the hot seat for Canada are:Foreign Affairs Minister: Chrystia Freeland,Ambassador to Washington: David MacNaughton &Former Prime Minister: Brian Mulroney.Freeland is a former trade minister and led Canada’s efforts to successfully revive its EU trade deal.And Mexico's deal makers are:Chief Technical Negotiator: Kenneth Smith Ramo,Mexican Economy Minister: Ildefonso Guajardo &Mexican Foreign Minister: Luis Videgaray.There is a sense in Mexico that victory for Trump will have to come at their expense.A combination of low wages, lax regulations & proximity to the US have turned Mexico into a top exporter.