LOL! There are millions of illegals in Texas which makes your suggestion that Texas is so "law and order" with respect to illegal immigration laughable.
Illegal aliens, who live in perpetual violation of the law are not going to abide by some idiotic residency requirement for in state tution. These people didn't fulfill the requirements to legally enter the US in the first place, I don't know why you have such a hard time understanding this very simple concept.
What a great time to be an illegal alien living in the US!
What you seem to be saying is that the illegal populations are about as likely to obey a residency requirement as the criminals are to follow a D.C. “gun control” act.