I am VERY familiar with Mexico's immigration laws (even though, guess what, I am not from Mexico, dun, dun, dun). Their enforcement is very harsh and getting harsher, especially when dealing with Central American migrants, for instance, who are treated horribly. But since we are not in Mexico, we are in the United States, I discuss immigration issues on U.S. soil.
She carries her green card at all times, but not once has she had to show it. But racial profiling is OK when it comes to immigration enforcement, so nope, it will never be put on the same sentence with the word "unconstitutional."
Nope, they did not ask her if she was a legal resident. Why? Because she doesn't have dark skin. There are a handful of times I have traveled with my "friend" (not sure why that word is put with quotations up there) and she is not an issue. I will travel through the same route with a darker friend of mine, and see if they follow up her "no, I am not a U.S. citizen" with other questions. Hmmm. I'm sure they will smile, ask her where she is from, and then let her go.
To refer as children simply as "illegals" is disgusting. Educate yourself as to why they are here, and their situation. They are from across the border, but that doesn't mean they are of less value than you, "FRASER."