The Cliff note version of it states that illegal immigrants in the state cannot receive federal money for college and can no longer receive in-state tuition. Furthermore, Arizona colleges will begin checking residency status starting next fall. Good job. It's not right that out of state students pay more than out of country illegals.
You know who it is that's going to colleges, don't you? It's not some 18 or 25-year-old who snuck across the border yesterday. It's the kid who was brought here as a very young child by his parents, and raised in Arizona, speaking english, attending and graduating from grade school and high school in AZ, and who considers himself an american the same way any other kid his age who was raised in America would.
I can very easily see the situation from this type of person's point of view and empathise. That's the person who says, "What do you mean send me 'back' to Mexico?" That person's only recollection of Mexico might be faint memories from early childhood, if that.