The undocumented population in the U.S. has been falling, increasing its length of stay and acquiring more American-born children.
According to Pew Research there were 12.2 million unauthorized persons in 2007, before the Recession. By 2015 it declined to 11.3 million. In its April, 2018 analysis it estimated that the 2016 figure was 11.3 million. The decline entirely accounted for by a drop in Mexicans, down from 6.9 million in 2007 to 5.6 million in 2016. Other Latin countries and Asian countries added more persons.
in 2014, 4 million unauthorized adults, or 39%, lived with their U.S.-born children, either minors or adults. In 2000, 2.1 million unauthorized-immigrant adults, or 30%, lived with their U.S.-born children.
The 11.3 million population includes the 700,000 persons formally protected by DACA and an additional 1.3 million persons that might be DACA-eligible were DACA to be revived and expanded as some have proposed.