In regards to Dr. Shaffer's recent blog post here-
He seems to be in direct contradiction with what he wrote in his excellent book “Boundaries Of Order”.
His full post reads thusly:
With all the efforts being made by states and cities to address the so-called “illegal immigration” problem — including making it a crime to rent to or employ such people — I wonder why the most obvious solution has not been offered.  An Arizona statute gives the police power to stop and question those who, on the basis of skin color, might be such an “illegal.”  But this raises too much uncertainty.  Why not require every “illegal immigrant” to wear a symbol on their clothing — perhaps a yellow star would do the trick — and then the police would not have to resort to questionable “equal protection” practices.  Later on, if the “problem” continues, those wearing the required yellow stars could be rounded up, put onto trains, and transported to “relocation centers” in Utah and Nevada — all in the interest of “national security,” of course.
BTW, for those who get upset that people who are emigrating to California do not speak the language of resident Californians, bear in mind that the early English-speaking immigrants entered a state in which Spanish was the prevailing language and culture!

He is correct insofar as the implications of a growing police state, considering the language of SB 1070 and how governments have a strong tendency to abuse such laws for their own aggrandizement.
Criticism of regime laws (and the absurd “National Security” scam) are all perfectly fine and good, but in this case, he had the opportunity to offer a better solution, but did not. His own concept of "Property Boundaries" could be easily applied, especially by someone as skilled as Dr Shaffer.

I hope Dr Shaffer's future work on this subject (even “work” as simple as blog posts) is more thoughtful-as the overwhelming majority of his work is.