The largest wave of immigration in history from a single country to the United States has come to a standstill. After four decades that brought 12 million current immigrants—more than half of whom came illegally—the net migration flow from Mexico to the U.S. has stopped and may have reversed. The standstill appears to result from the weakened U.S. job market, heightened border enforcement, a rise in deportations, the growing dangers associated with illegal border crossings, and changing economic and demographic conditions in Mexico….

Read more at the Pew Hispanic Center.