From Texas Standard:
Pew Research Center recently published a report showing how a majority of unauthorized immigrants in the U.S. live in one of 20 metropolitan areas. But there was another statistic within the report that was important in its own right: The number of unauthorized immigrants in the U.S. has gone down over the last decade. As of 2016, Pew estimates there were about 10.7 million, compared to about 12.2 million in 2007.
Mark Hugo Lopez is director of global migration and demography at Pew Research, and says there's been a large decline in unauthorized immigrants from Mexico, in particular. At the same time, there's been an increase of unauthorized immigrants from other countries, whom Lopez says have most likely overstayed their visas.