Europeans are embracing American craft beer. So, why are exports trailing off?

In recent years, more and more overseas beer drinkers were trying out the bold, often hoppy experiments coming from America's craft brewers. Exports of US craft beers boomed. But now, exports are cooling off. We visit the New Belgium Brewing Company in Fort Collins, Colorado, the nation's fourth-largest craft brewer, to learn about the challenges becoming a global player.