A report done at the University of Arizona shows US/Mexico trade through Arizona ports last year totaled about $31 billion. US exports were valued at $13.4 billion and US imports were valued at $18.1 billion. Arizona Week travels to Nogales, AZ, the port with the largest volume of commodity flows between the US and Mexico. Richard Rubin//Association of Maquiladoras in Sonora Jaime Chamberlain//J-C Distributing George Hammond, Ph.D.//UA Eller College of Management