That's great for him, that he came here and made something of himself.
What about the kid whose parents played by the rules, who is still stuck in Mexico, or entered much later than this guy? What about the future kids who will have a harder time coming in legally as more and more illegals being caught herald more and more restrictions?
The simple fact is: his family came here illegally, he came here illegally, and he needs to go through the proper channels.
If you break into my house, I'm kicking your ass. Even if you only broke in to sweep the floors, fold my laundry, do the dishes, and fix a hole in my roof; I am still kicking your ass because you broke into my house. I didn't ask you, I didn't want you to do it. If you had come to me legitimately and asked if you could do those things, for free or for a wage, that would have been fine with me, but since it is all prefaced on a violation, you still have to answer for that violation.