I don't know enough about terrorist profiling, but I do know that on a commercial U.S. airliner, you are judged by your actions, not your race or religion. You have to do something questionable to be called on it. Admittedly, people of Middle Eastern descent will get more scrutiny regardless of what the policy says because that has been the background of most of the terrorists and it's a natural human reaction, but I'm not condoning it. Just like if I was Hispanic, I'd not like it if it was always assumed I'm a wet back. In the airport I watch tons of people with Middle Eastern or African descent go through the employee line and all they need is their ID, no questions asked.
The tricky, possibly questionable part is what did they have to do to get those cards? Don't know.
If the mother is in the states illegally, so is the child. When they deport her, she can take her son home with her. I admit that if Mexico won't accept the child, then there is a problem, but the pure logic of what I'm saying is sound. If you break the law to enter, your child does not deserve citizenship imo because you the parent are not recognized as a citizen, you are a foreigner illegally trespassing in another country. Illegal aliens drawing off the U.S.'s social structure is a huge problem and a huge drag on our resources. And thousands upon thousands of illegals use this tactic to subvert internationally recognized laws to gain permanent entrance to the country.