Increasingly, US companies are 'nearshoring' - moving their operations closer to home.Cities in the north of Mexico, like Monterrey, are seeing a manufacturing boom. We speak to some of the companies who are cashing in, and ask, is this a renaissance that will last?Plus we look at other countries who are trying to get a share of the market.Presenter/producer: Samira Hussain(Image: Truck at the Mexico/US border. Credit: Getty Images)