Suppliers to Mexico factories worry about Trump's pending tariffs, especially on the automotive industry, at annual El Paso manufacturing trade show.

A full-blown tariff war with the US could prove a gut punch for Mexico, which is already battling an economic slowdown. Latin America’s second-biggest economy depends heavily on its commercial relationship with its northern neighbor — its top trading partner by a wide margin.

With more than 80% of vehicles exported from Mexico to the United States, experts on Mexico's auto industry appear to be bracing for impact.