First, he got some bureaucrat to sign an executive action letting illegal aliens remain in the USA. This is not an Executive Order, so Congress cannot pin the tail on Obama. Smart.
Second, he lets La Raza encourage them to register. Smart.
Third, the IRS issues Social Security cards to them.
Fourth, they get into the IRS computers as taxpayers.
Fifth, he goes away after January 20, 2017.
Sixth, a Republican President signs an Executive Order revoking Obama’s executive action.
Seventh, the ICE starts rounding up these now-registered illegal aliens, since the ICE will have their names, Social Security numbers, and addresses.
Without Obama, the IRS would never have known where these people live, who employs them, and where they came from. The cost of expelling them will drop significantly.
There is a fundamental economic law: “When the price drops, more is demanded.” Obama is driving down the price of identifying illegal aliens. This will become known in the textbooks as the Pat Buchanan effect, a corollary to the law of unintended consequences.