<p>MEXICO CITY (AP) - Mexican President Vicente Fox said today his administration is open to the possibility of renegotiating agricultural tariffs under the North American Free Trade Agreement -- although he warned that the move wouldn't benefit Mexico.</p>
<p>It was the first time Fox has talked of the possibility of renegotiating NAFTA provisions that lifted tariffs Jan. 1 on many U.S. farm products. Before, he had said the Mexican government would live with the changes -- angering farmers across the country who have periodically threatened to block roads and crossings at the U.S. border.</p>