Rafael Avila harvests corn grown from seeds that trace their lineage to the Aztec and Maya cultures. In Mexico there’s a saying. “Sin maiz, no hay pais.” Without corn there’s no country.’ Small plot farmers like Avila have been crushed by NAFTA. But Avila blames the Mexican government which he believes has ignored small farmers since NAFTA was signed in 1994. (Lorne Matalon)