Nearly half of the illegals in the country are here on expired visas, the 'problem' is that a large percentage of them are 'white' and therefore some on the Right just look the other way.
Immigration Facts: Deferred Action for Childhood Arrivals (DACA)
http://www.brookings.edu/research/immigration-facts-deferred-action-for-childhood-arrivals-daca/
A really good read if ya have time for it.
The Brookings FOIA data show that DACA applicants were born in 192 countries, and that there are 25 countries with at least 1,000 applicants who together accounted for over 96 percent of all applicants. In total, 74.9 percent of applicants were born in Mexico, followed by El Salvador (4.0 percent), Honduras (2.7 percent), Guatemala (2.5 percent), South Korea (1.5 percent), Peru (1.4 percent), Brazil (1.2 percent), Colombia (1.1 percent), Ecuador (1.0) and Philippines (0.7).
Regionally, Central Americans comprised 10 percent of the total, South Americans were 7 percent, Asians made up 4 percent, Caribbeans were 2 percent of the total, and those from all other countries made up the remaining 2 percent.
...two percent is not a large percentage