You must listen to more NPR, CNN, and ADL "information." [sarcasm]
To start with, the list represents only those we know about. It obviously doesn't include those who come and go at will through our open borders.
Secondly, how many thousands are replacing them by entering the country legally? In addition to all the student, work, and tourist visas, we are constantly "resettling" more UN "refugees" from such compatible places as Somalia. As fast as one hand rounds them up, the other is bringing more in. My guess is that the "new" security checks done on these applicants is about as revised and effective as the new airport security checks.
I'm also wondering if any of these people ordered deported will actually ever leave the country.
In short, I am pleased to see the government actually doing something about these illegals. It's far too early, however, to feel any sense of relief.