This is why.
The American left has its own millet system, consisting of ethnic (and other) groups defined in large part by their grievances as victims of America. The left provides these groups with attention, representation, and handouts in exchange for their votes. This system has been in place for generations, and it has become the driving wheel of Democratic politics. It has worked nearly as well for them as it did for the Ottoman overlords.
The history of the left in this country is a history of division. Whatever conflict was current — labor vs. management, class vs. class, race vs. race — there you’d find the left, stirring things up in order to derive as much political benefit as possible. A workable democratic system demands a willingness to seek consensus and engage in compromise. The left prefers Balkanization and permanent conflict.
For some years now, it has appeared that the Leftist formula had reached the end of its string. The corrupt and crime-ridden unions were on their last legs, hemorrhaging members even as they drove jobs overseas. Blacks were steadily moving into the middle class and becoming less susceptible to separatist rhetoric. An attempt to transform the university student body into a permanent revolutionary phalanx on the Peronist model had only partial success — students were willing to play while actually on campus, but after graduation, they went on to more interesting pursuits.
So how to keep the pot boiling? The answer was to go find a new millet — or rather, to take advantage of the one next door, of the desperate people fleeing a serial kleptocracy, an uneducated, ignorant, and frightened mass open to all forms of manipulation.
This explains why illegal immigration is so important to the left. It explains why efforts to halt illegal border-crossings, a problem that wouldn’t challenge a six-year-old, are executed so halfheartedly and so often left unfinished (see the recent “virtual fence”). It explains the irrational response to Arizona’s effort to tighten up existing immigration law (not create new law — Arizona’s statute is no more than a reinforcement of existing federal law). It explains the insistence that any solution to the immigration problem provide for amnesty and citizenship for the millions of illegals already living within our borders. It has nothing to do with compassion, nothing to do with fairness or practicality or any of the other reasons offered by “reform” advocates. As is almost always the case where the American left is involved, what it has to do with is power.
The left wishes to use the illegals as a battering ram against the American polity, the same as they used labor, and blacks, and every other group they ever encountered. Illegals will become a new protected class, with privileges and entitlements denied the rest of the populace (including, ironically, current members of previous such classes). They will be discouraged from learning English, as occurs today under the doctrine of “bilingualism,” to assure that they remain a separate presence. A vast bureaucracy will arise to “assist” the new citizenry, funded with billions — oh hell, make that trillions, this is the Obama era — and staffed with sociologists, ethnographers, psychologists, and other disciplines unimagined today. All will be of the same political persuasion. A permanent crisis atmosphere will be generated around the new class. The “Amnestee” question will lead to endless problems and ramifications and act as a permanent indictment of the country and its policies. The native population (not to mention legal immigrants) will grow increasingly embittered and angered. The former illegals will be rendered even more miserable than they are today.