On Saturday, The Observer revealed that Prime Minister Boris Johnson’s recently appointed chief of staff received around £235,000 of EU farm subsidies over the course of two decades in relation that his family owns. Dominic Cummings is often portrayed as the mastermind behind the successful referendum campaign to Leave the European Union. So he is currently enemy no.1 among remain-supporters.

I am unconvinced this latest line of attack plays in Remainers’ favor (I was a marginal Remain voter in the referendum and still hold out some hope for an eventual EEA/EFTA arrangement). Instead, this story serves as a reminder of probably the worst feature of the current EU: the Common Agricultural Policy.

The CAP spends more than a third of the total EU budget (for a population of half a billion people) on agricultural policies that support around 22 million people, most of them neither poor nor disadvantaged as Cummings himself illustrates. Food is chiefly a private good and both the interests of consumers, producers and the environment (at least in the long-term, as suggested by the example of New Zealand) are best served through an unsubsidized market. But the CAP, developed on faulty dirigiste economic doctrines, has artificially raised food prices throughout the European Union, led to massive over-production of some food commodities, and denied farmers in the developing world access to European markets (the US, of course, has its equivalent system of agricultural protectionism).

These economic distortions make an appearance in my new paper with Charles Delmotte, ‘Cost and Choice in the Commons: Ostrom and the Case of British Flood Management’. In the final section, we discuss the role that farming subsidies have historically played in encouraging inappropriately aggressive floodplain drainage strategies and uneconomic use of marginal farming land that might well be better left to nature:

British farmers currently receive substantial subsidies through the European Union’s Common Agricultural Policy. This means that both land-use decisions and farm incomes are de-coupled from underlying farm productivity. Without the ordinarily presumed interest in maintaining intrinsic profitability, farmers may fail to contribute effectively to flood prevention or other environmental goals that impacts their output unless specifically incentivized by subsidy rules. If the farms were operating unsubsidized, the costs of flooding would figure more plainly in economic calculations when deciding where it is efficient to farm in a floodplain and what contributions to make to common flood defense. Indeed, European governments are currently in the perverse position of subsidizing relatively unproductive agriculture with one policy, while attempting to curb the resulting harm to the natural environment with another. These various schemes of regulation and subsidy plausibly combine to attenuate the capacity of the market process to furnish both private individuals and local communities with the appropriate knowledge and incentives to engage in common flood prevention without state support.

Our overall argument is that it is not just the direct costs of subsidies we should worry about, but the dynamics of intervention. In this case, they have led not only farmers but homeowners and entire towns to become reliant on public flood defenses with significant costs to the natural environment. There is limited scope for the government to withdraw provision (at least in a politically palatable way).

Turning back to The Observer’s gotcha story, it isn’t clear to me that Cummings is a hypocrite. I think the best theoretical work on hypocrisy in one’s personal politics comes from Adam Swift’s How Not To be Hypocrite: School Choice for the Morally Perplexed. In it Swift argues that the scope to complain about supposed hypocritical behavior, especially taking advantage of policies that you personally disagree with, can be narrower than intuitively imagined, mainly because of the nature of collective action problems. Swift’s conclusion is that, in some circumstances, leftwing critics of private schools are entitled to send their own children to private schools so long as others continue to do so and burden of doing otherwise is too strong. Presumably, this also means that strident libertarians are not hypocritical to use public roads so long as a reasonable private alternative is unavailable.

In an environment where every farmer receives an EU subsidy, it might be asking too much of EU-skeptic farmers to deny it to themselves. Instead, it seems legitimate and plausible to take the subsidy while campaigning sincerely to abolish it.