Migration Policy Institute report
After four decades of strong growth, the Mexican immigrant population in the United States hit a turning point in 2010. While the overall number of immigrants in the country increased every year between 2010 and 2017, the number of Mexicans first flattened out and then started a slow decline in 2014. Between 2016 and 2017, the Mexican immigrant population shrunk by about 300,000, from 11.6 million to 11.3 million. Nonetheless, Mexicans are still the largest foreign-born group in the country, accounting for 25 percent of the 44.5 million immigrants as of 2017.