The illegal invaders and the legal immigrants are two different groups, as you say, and one would expect those who earnestly strive to comply with requirements for citizenship to also take a stand against the line-jumping invaders.
However, this article points out some groups of immigrants and illegals we haven't considered. How do Koreans get in here illegally, for example? With falsified documents? I mean, they can't sneak across the ocean...
BTW, the neighborhood I grew up in is now called 'Koreatown.' Ouch.
Then there are the naturalized immigrants, such as this Pakistani highlighted in the article, who have not assimilated and are now using the Hispanic uprising as a way of voicing (imagined or otherwise) grievances. So, these legal immigrants (although achieving the privilege and honor of U.S. citizenship) have been stirred to discontent also. I am a little concerned also that this Hamid is a "commercial pilot."
Which brings me to the last group: Middle Eastern muslims. They have not assimilated either.
We have a border problem, an illegal invasion problem and -- I think -- a serious assimilation problem.
And instead of dealing with it, we are fanning the flames, doing everything we can to encourage it to get worse!
Madness, sheer madness.