Mexican farmers protest as Trump prepares to renegotiate NAFTA

Farmers march to the Interior Ministry with a sign that reads in Spanish "Remove farming from NAFTA" in Mexico City, Monday Aug. 7, 2017. Protesting farmers demand the agricultural sector be removed from the North American Free Trade Agreement (NAFTA) as the Trump administration prepares to renegotiate the trade agreement with Mexico and Canada. [AP Photo/Gustavo Martinez Contreras]

A man on the top of a van waves a flag during a farmers' protest in Mexico City, Monday, Aug. 7, 2017. Farmers marched to the Interior Ministry demanding the agricultural sector be removed from the North American Free Trade Agreement as the Trump administration prepares to renegotiate NAFTA with Mexico and Canada. [AP Photo/Gustavo Martinez Contreras]

Farmers march to the Interior Ministry with a sign that reads in Spanish "Remove farming from NAFTA" in Mexico City, Monday Aug. 7, 2017. Protesting farmers demand the agricultural sector be removed from the North American Free Trade Agreement (NAFTA) as the Trump administration prepares to renegotiate the trade agreement with Mexico and Canada. [AP Photo/Gustavo Martinez Contreras]

An effigy of Mexican President Enrique Pena Nieto hangs from a mock gallows set up by protesting farmers at the foot of the Angel of Independence monument in Mexico City, Monday Aug. 7, 2017. Farmers marched to the Interior Ministry demanding the agricultural sector be removed from the North American Free Trade Agreement (NAFTA) as the Trump administration prepares to renegotiate the trade agreement with Mexico and Canada. [AP Photo/Gustavo Martinez Contreras]