Your insulting language (and that of some of your critics) I oppose but can’t argue against logically.
But on jobs, you’re factually mistaken. Jobs are going to be roughly proportionate to the number of consumers. If you expel 11 million people, they take their jobs with them. Maybe, that, year, crops rot on a vine in the US, as someone showed me before in a reliable link, or, at best, that year, US citizens pick the crop for a much higher pay. But next year – I buy produce picked by Mexicans, in Mexico. Not only do those Mexicans start paying Mexican taxes rather than ours, the Americans put out of work by our declining farm economy can no longer have their unemployment benefits paid by undocumented workers.
Our military is going to be stronger – at the same cost to taxpayers – if it has a larger pool of potential recruits to choose from.
If you want to talk about wasted spending in support of higher education, how about this: Little more than half the freshmen at supposedly four year US colleges have their bachelor’s degree even six years later. By increasing the pool of those eligible, we would have a better chance that the young men and women getting a government-subsidized education were actually college material.
Now, if the college material college graduates actually stay in this country, they will pay, for the next several decades, the taxes needed to provide baby boomers like my wife and I social security and medicare benefits. True, if they get a, say, University of Texas degree, and live in the shadows due to lack of Dream Act passage, the tax benefit to the US will be less. And if they are expelled, as you seem to want, it be a zero.
Your idea that immigrants take jobs bears considerable similarity to the thankfully declining liberal obsession with over-population. Stupid? No. Liberal? Could be 
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