The discussions here about Arizona’s new attempt at enforcing immigration law have set me thinking about a more general question: What should we do as a body politic in a situation in which a law we have passed seems impossible to enforce?

In a sense, no law is enforced perfectly. Cannibalism is against the law, yet it does still, on rare occasions, happen that someone kills and eats someone else. We don’t generally describe this as the laws against cannibalism “not being enforced”. Rather we describe it as someone breaking the law.

When we talk about a law not being enforced, we generally mean that a lot of people are breaking it, and yet few of them seem to be suffering the consequences. Thus, although murders take place on a daily basis in our country, we generally do not hear complaints that no one is enforcing the laws against murder, since we at least see the police and prosecutors going through the process of trying to arrest and prosecute people for those crimes.

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