It was a deal that created the largest free trade region in the world, but 20 years on there is still debate over the benefits of the North America Free Trade Agreement.<br /><br />It is an issue that will be discussed at the Summit in the Mexican city of Toluca on Wednesday.<br /><br />Al Jazeera's Adam Raney reports from Mexico City, taking a look at whether it has helped improve the lives of Mexicans.
