Global population mobility is one of the most striking demographic changes witnessed more recently during the 20th and 21st century. More people are geographically mobile today than at any point in human history and are living abroad now more than ever. In 2013, 232 million people were international migrants (UN Press Release 2013), which increased from 214 million in 2010 (IOM 2010). With an estimated 232 million people moving internationally—mostly from poor, subsistence-based agricultural countries to rapidly industrializing, economically advanced countries—and approximately three quarters of a billion migrating from rural to peri-urban and urban areas within their countries, population mobility has gained significant attention in both scholarly and policy arenas.