The BBC reports that the president of the United States earned more than one billion dollars from cryptocurrency in a single year — a sum that, we are told, far exceeds his earnings from real estate or any other commercial enterprise. The Guardian adds that the White House has rejected conflict-of-interest concerns outright, with officials declaring that the president has "proudly made the US the crypto capital of the world." I ask the reader to hold those two facts together and consider what they mean for the integrity of exchange.

I have always maintained that the interests of merchants and the interest of the public are not naturally aligned. In The Wealth of Nations I wrote at length about how merchants and manufacturers combine, consciously or otherwise, to bend public policy toward their own enrichment at the expense of the consumer and the general welfare. The remedy I proposed was not the abolition of commerce but the construction of institutions — law, transparency, judicial independence — that prevent any single party from writing the rules of a game in which he is also the leading player.

What the BBC describes is something more direct and more troubling than ordinary regulatory capture. Regulatory capture occurs when a private interest quietly influences a public body. What is described here is the reverse: the public authority is itself the private interest. The sovereign sets the regulatory environment for a market; the sovereign simultaneously holds the largest financial stake in that market's appreciation. Every policy announcement, every favorable executive order, every dismissal of a regulator who might discipline the sector, becomes a transaction with a personal beneficiary. This is precisely the conflict of interest that institutions of government are designed to prevent.

I am aware that cryptocurrency is a technical matter — involving distributed ledgers and cryptographic verification — that lies well outside anything I could have known. I will not pretend otherwise. But the moral and institutional question requires no specialized knowledge of the engineering: when the party responsible for setting the rules of a market stands to gain personally from the rules he sets, the market ceases to be free in any meaningful sense. It becomes, instead, a private toll road bearing a public sign. The consumer, the ordinary investor, the pensioner who holds crypto assets on the assumption that the regulatory framework is neutral — all of them are paying into a system whose neutrality has been compromised at the highest level.

The White House's response — that the president has proudly made America the crypto capital of the world — only deepens the concern. Pride in a policy outcome is perfectly appropriate for a statesman. Pride in a policy outcome that has personally enriched him by more than a billion dollars is a confession, not a defense. It collapses the distinction between public stewardship and private accumulation that is the very foundation of legitimate government.

The institutional question, then, is simple to state and difficult to answer: what body is capable of disciplining a conflict of interest when the conflict is located at the apex of executive power? In my own analysis of the East India Company, I argued that a chartered monopoly that also exercised sovereign functions was dangerous precisely because it answered to no authority above itself. The remedy was external accountability — parliamentary scrutiny, judicial oversight, transparent accounting. The same remedies apply here, if the institutions that provide them retain the independence to act. Whether they do is a question of present-day political fact that I am not positioned to answer — but it is the only question that matters.