It wasn't boring, it just got repetitive sometimes.
Your comment on how resouces are being spent to spread liberty elsewhere is a rimshot; the phrase "these parasites systematically rape and pillage our country" is quite too direct. Very few people think that; rather, prejudice is in part due to flawed ideas (and a lack of understanding of the social contract) of what society is obligated to do for its participants.
Side note: decapitalise "Presidents" -- unless you are referring to specific ones.
Anyway, those are just my thoughts to create a "brilliant" essay. Right now, I think this is a fairly good UChicago essay. Enough to impress (fairly informed) Adcoms into admissions, and probably setting yourself apart from many essays, but not having a "totally amazing" factor.
Personally I would advise rewriting the essay so that you are not acting so downright hostile. The more pervasive type of prejudice is the irrational and heartless argument that threatens to pose as rational argument (which is why Swift wrote his satire -- to mock such arguments). Keep the "humane enslavement" part in, but I would use an attitude somewhat resembling, "We are glad to offer such desperate folk our refuge of freedom and liberty, especially since their manual labour is economically valuable. But Mexicans have a somewhat unfortunate tendency to indulge in crime and laziness if not properly overseen, and this spoils their utility ... in order to compensate, I suggest humane enslavement." You also need some more puns playing on the human/humane idea.
Or something like that -- use your own imagination. But right now I think the satirical effect is somewhat dampened by the fact that the hostility is too obvious, and at the same time may not work on clueless adcoms either.