The article does conclude that the current non mexican immigrants ARE very much like the others who came.
Despite this fact, I suspect you are very much against chinese or indian immigrants anyway, even thought the article pretty much says that they assimailate easily and behave pretty much the same or better than native born.
I'm not against anybody who is a "legal" immigrant, with the general exception of most Muslims. But that is because, even moreso than Communists, I think they are generally incapable of assimilation into our society because they cannot give full political loyalty to this country. They constitute a genuine threat to our long-term stabilty and peace as a nation. Behold Europe or any other place where they have emigrated in large numbers. Disaster!
The major problem here is unrestricted and unsustainable "illegal" immigration. I do, however, think immigration needs to be contolled in numbers as well as from which countries and cultures people come from. This is our country. We should regulate it the best way for us, not them.
I also have a daughter-in-law who is a legal immigrant. She for several years has been going through the endless paperwork and hassle mill of this bureaucracy which one encounters when you try to do it "legally". I have often told her she needs to sneak over the Mexican border and then enter illegally. At least that way she has a better chance of staying, getting all sorts of benefits - and it won't cost her all the money it now is costing - plus they won't keep threatening to deport her because of all their incompetent screwups!
Believe me, I am familiar with what is going on in the immigration scene and am first-hand aware of the laziness, fecklessness and downright incompetence which inhabits much of our immigration bureaucracy. It is not a government department of which I, as an American, am the least bit proud or confident.