From a reader:

You wrote:
“we know that legal immigrants get ticked-off by illegal immigration”
I think that even illegal immigrants sometimes get fed up with it too. I was listening to one of the local Spanish radio stations (actually, my Central American wife was) a while ago, and there was some call-in talk show. A few construction workers complained that people were coming in from Mexico and doing lower-quality work for less money. You need to know that here in North Carolina, most Latin American immigrants are Mexican (I’d say 80-90%), and most of those are illegal. So what I think we heard was illegal immigrants complaining about the illegal immigrants who came after them.