More of a realist. If you lack the deductive reasoning to even consider the possibility, you might want to reassess your analytical skills. Do you think large groups of illegal migrants, who create bad living conditions in their home cities, will improve things when they come here?
Take a look at the place below. Now, consider if large groups join American communities. Do you think they will adopt the habits of their new country or continue with their usual practices? You'll have small pockets of the country begin to look like this. Give it 30 years max if this trend continues.