He doesn't address the many concerns that have been highlighted by other law enforcement agencies.
And some of the things he says are outright inconsistent with reality. Like this:
Boston, MA: Do you think this law will have a real impact on reducing the increased levels of drug and violent offenses, which I assume is the underlying point of the law?
Sheriff Joe Arpaio: Yes. In my jail today we have almost 100 people charged with murder and they're all illegally here. Plus many other violent crimes. If they were not in this country we would not have 18 percent of the people in the jails here that have many violent crimes.
I think the real reason is that they have violated the law by crossing that border and being here and if people violate the law they should be held accountable.
The association between immigration and crime is in the opposite direction:
Futurity.org – Drop in violent crime tied to immigration?
And to Bear, yes, I read all the opinions on the page I posted. There are genuine concerns there from a law enforcement perspective. Do you have any reason to think I didn't?