Good article - thanks, RR, for posting. Succinct and well worth reading.
Getting stronger border security, and crippling the black market for labor, are worthy goals that can realistically only be obtained through political compromise - that compromise being a path to legal status for those undocumented aliens already here who have kept their noses clean.
I think that's a bargain well worth taking. Not only does it address the policy concerns of conservatives, it is morally just. Our tacit policy has been for decades to lure illegals here with the promise of work, and employers have leaped at the chance to employ them.