The level of immigration, legal and illegal, has significantly increased during the past two years, according to data collected by the Census Bureau. Between 2012 and 2013, 2.3 million immigrants arrived, about 1.1 million a year. The Center for Immigration Studies (CIS), which did a report on the Census data, estimates that 350,000 of the arrivals each year were illegal immigrants. Between 2014 and 2015, 3.1 million immigrants came to the U.S., more than 1.5 million per year. Of those, 550,000 were illegal aliens. Accounting for the surge, said CIS, was increased immigration from Latin American countries other than Mexico, South Asia, and East Asia.
Read more at cis.org.