About just as many Mexican families are leaving the U.S. as they are coming. A recent report by the Pew Hispanic Center shows that from 2005-2010, roughly 1.4 Mexicans immigrated to the United States, but about the same number of Mexican immigrants (and their U.S.-born children) moved from the United States to Mexico.
These numbers mark the first significant decrease in the number of unauthorized Mexican immigrants in the U.S. A few factors may explain this trend including the weakened U.S. job market, changing economic conditions in Mexico, and heightened border enforcement. In addition, deportations have increased – nearly 400,000 were deported in 2010.
Mexicans account for 30 percent of all U.S. immigrants. But when measured proportionally, immigration waves from Germany and Ireland in the late 19th century equaled or exceeded the modern wave from Mexico.
Read more at Pew Hispanic Center.