There are actually a lot of illegal Chinese, but they don't cause the trouble that the Hispanics cause, except of course for the Tongs.
Chinese illegals have been caught trafficking in white slavery, imprisoning people and using them as slaves, running illegal arms shipments, and other things.
I don't like illegal immigration at all, but the idea that the hispanics cause more trouble than the Chinese is hogwash and sounds sort of racist, which I am sure you aren't.
And don't forget all the trouble vaused by the Russian mafia, either!