how abut 1/2 or more for California, where 50% of the 33 million population are immigrants or children on immigrants, which surely cannot be legal, since the government hasn't allowed 15 million to enter legally in the last two generations and of these, The 2000 Census found that 36.9 percent of California's foreign-born population had arrived in the state since 1990.
http://www.fairus.org/Research/Research.cfm?ID=1408&c=9
A good many of these thugs are caught on this end of the border.
Now, even Houston, home of big daddy open borders, is having to deal with them. Of course, he has the secret service guarding him so he has no problem like normal citizens.