This is real money. Youre the most important part of the show. Join our live conversation on twitter at al jazeer aj real mo. And it is a gathering of the continents three amigos. Tomorrow the leaders of the United States, canada and mexico compete to commemorate 20 years of free trade between their countries as enshrined in the north American Free trade agreement. In 1994 nafta created the largest trading bloc the world has ever known. Now it crosses 9. 3 million square miles. Together the three countries economic output add up to 17 trilliondollar. But nafta came in a cloud of controversy. It was a decisive issue that unleashed intense passion among americans. Americans cried fowl when a democratic president supported it. But criticism came from the right. Ross perot warned of a, quote, giant sucking sound that would send u. S. Jobs south of the border. Years after becoming law, politicians and pundits continue to speak out against it to rally their base. In 2008 then senator obama c