While Mexico is the United States’ largest source of immigrants, the number of Mexican immigrants living in the U.S. illegally has declined since 2007.
As the number of international migrants reaches new highs, people around the world show little appetite for more migration – both into and out of their countries.
Last year, 84,000 people left Puerto Rico for the U.S. mainland, a 38% increase from 2010. At the same time, the number of people moving to Puerto Rico from the mainland declined.