Direct blame is surely not in the article, however with all the 'excuses' going on as to wanting to make a case "that illegals only do work that no one else will do", there is plenty of 'indirect' blame in this article.
Also, considering the source being AP ...
The net of it is that the left wing liberal media continues to paint this picture that this is just an unsolvable problem, etc.
It is quite easy to read between the lines on this article and see the 'intent' of the piece.
The article was basically saying -- as far as I can tell --it's like pointing out that part of the drug problem is the suburban couple who smokes a joint before going to the Phil Collins concert...which is accurate.
It's also saying that this is a non-centralized problem. It isn't a couple hundred businesses hiring hundreds of thousands of illegals, but hundreds of thousands of private citizens hiring just a couple of illegals at a time.