Seth Freed Wessler reports on people going the opposite direction over the US/Mexico border. Each year hundreds of thousands of people are deported from the US to Mexico — tens of thousands more choose to leave on their own — and lots of them make the journey after years and years living in the states. Wessler explains how customer service call centers in Mexico are capitalizing on the fact that many of these people speak English with American accents. They're hiring such people, and using them to staff customer service lines for American companies. But, for those who've left the US, taking calls over and over from the place they used to call home, it can be a complicated experience. (11 minutes)