Libertarian theories of law

The "bad guy" in many conversations I've had about things Catholic-legal-theory-ish is "libertarianism."  It's not always clear, though, what is meant by "libertarianism."  So, Larry Solum to the rescue, with a helpful post on "libertarian theories of law."  Here is -- as he often says -- a "taste":

The dominant approaches to normative legal theory in the American legal academy converge on fairly robust role for the state and government subject to the constraints imposed by an equally robust set of individual rights. Normative legal theorists of all stripes--conservatives and liberals, welfarists and deontologists—tend to agree that the institution of law is fundamentally legitimate and that the legal regulation has a large role to play. There is, however, a counter-tradition in legal theory that challenges the legitimacy of law and contends that the role of law should be narrowly confined. . . .

What is the proper role of government?” and “When is coercive legislation legitimate?” Theories at this level of abstraction need foundations of some sort, either deep foundations in comprehensive moral theories like utilitarianism or shallow foundations that explain why deeper foundations are unnecessary. . . .

[Solum then sketches libertarianism's consequentialist, deontological, and pluralist foundations.  Here is what he has to say about the latter:]

There is an obvious problem with locating the foundations of a political theory, like libertarianism, in a deeper moral theory, such as some form of deontology or consequentialism. In a pluralist society, it seems very unlikely that any one view about morality will ever become the dominant view. Instead, modern pluralist societies are usually characterized by persistent disagreements about deep moral questions. If a particular form of libertarianism rests on deep moral foundations, then most of us will reject that form of utilitarianism, because we reject the foundations. One alternative would be to try to argue for libertarianism on the basis all of the different moral theories, but that is obviously a very time-consuming and difficult task. Another approach would be to articulate shallow foundations for utilitarianism—foundations that are “modular” in the sense that they could be incorporated into many different comprehensive theories of morality. This general strategy was pioneered by the liberal political philosopher, John Rawls—himself, of course, no libertarian.

One contemporary libertarian legal theorist who has pursued the pluralist strategy is Randy Barnett. In his book, The Structure of Liberty, Barnett argues that anyone who wishes to pursue their own interests—whatever those might be-- have good reasons to affirm a generally libertarian framework for government. Barnett’s case for libertarianism is complex, but his basic idea is that human nature and circumstances are such that the law must establish and protect property rights and liberty of contract. The key to Barnett’s argument is his identification of what he calls the problems of knowledge, interest, and power. For example, the problems of knowledge include the fact that each individual has knowledge of his or her circumstances that are relevant to how resources can best be utilized. This fact, combined with others, make decentralized control of resources through a private property regime superior to a centralized command and control system. For our purposes, it is not the details for Barnett’s argument, but his general strategy that is important: Barnett attempts to create a case for libertarianism that does not depend on either consequentialist or deontological moral theory.

I think this is very helpful.