'Nevada has a small population, but a high percentage of undocumented immigrants. According to Pew Research data, in 2012 it had the highest percentage of such residents in the United States: 7.6 percent.
It also has the highest percentage of illegal immigrants in its labor force, at 10.2 percent. And crucially for the White House, it has in its schools many, many children of these workers. In Nevada, 17.7 percent of students in K-12 schools have at least one undocumented parent.'