Luigi Mangione sits in a Manhattan jail cell, convicted on federal charges of stalking a UnitedHealthcare executive. But the state of New York still wants to try him for murder. The same act. Two sovereigns. Two trials.
This is the dual sovereignty doctrine—a legal relic that allows both federal and state governments to prosecute the same conduct. And it is about to become the most important legal concept you’ve never heard of in decentralized governance.
Because your DAO is about to face the same dilemma.
Context: The Legal Ghost in the Machine
The Mangione case is a stark reminder that the American legal system is not a single authority. It is a patchwork of overlapping jurisdictions, each with its own statutes, procedures, and appetite for punishment. In 2025, a federal judge dismissed the murder and firearm charges against Mangione, leaving only stalking counts. He pleaded guilty to those. But New York State’s second-degree murder charge remains alive, with a trial scheduled for September 8.
His lawyers will argue that the federal conviction bars the state prosecution under New York’s “former prosecution” rule—a state-level protection stronger than the federal double jeopardy clause. The Supreme Court’s 2019 decision in Gamble v. United States reaffirmed that dual sovereignty is constitutional, but it left room for states to offer greater protections. The outcome will depend on whether a New York judge sees the federal stalking conviction as the “same criminal transaction” as the murder plot.
Now, imagine that same logic applied to a DAO. A decentralized autonomous organization runs a smart contract that allows users to lend and borrow assets. The code is deployed on Ethereum. The developers are in Germany, the treasury multisig signers are in Singapore and Brazil, and the token holders voting on governance proposals are scattered across 50 states. When a user in California is liquidated due to a flash loan attack, which jurisdiction’s law applies? Who gets sued? And who gets indicted?
This is not a thought experiment. It is happening now.
Core: The Technical Reality of Jurisdictional Overlap
Let’s look at the data. In 2024, on-chain governance voter turnout across major DAOs averaged below 5%. That means 95% of decisions are made by a tiny fraction of token holders—often whales and venture capital funds who hold the majority of voting power. I’ve seen this firsthand during my work on the Prague Consensus workshops in 2017, where we tried to educate developers about the importance of broad participation. Most projects ended up with governance structures that looked democratic on paper but were, in practice, controlled by a few wallets.
Now add the legal layer. When a DAO votes to change an interest rate model or upgrade a protocol, that action is a “transaction” in the eyes of the law. If the change causes losses to users in New York, California, and the European Union, each jurisdiction could claim the right to prosecute. The DAO’s developers, signers, and even token holders who voted “yes” could face charges ranging from fraud to conspiracy to unlicensed money transmission.
The Mangione case shows that dual sovereignty is not a theoretical abstraction. It is a real weapon. The federal government can pursue charges for stalking—a relatively narrow crime—while the state pursues murder. In the blockchain world, the U.S. Securities and Exchange Commission (SEC) might bring a civil enforcement action for unregistered securities, while the Department of Justice (DOJ) files criminal wire fraud charges, and a state attorney general launches a consumer protection lawsuit. All for the same smart contract.
During my time advising the EU regulatory task force in 2025, I saw regulators explicitly discussing “parallel enforcement” as a tool to deter bad actors. They want the ability to hit attackers from multiple angles. But the same tool will be used against legitimate projects that simply failed to comply with overlapping laws.
The technical solution—code audits, bug bounties, and formal verification—is necessary but insufficient. You can have a perfectly written smart contract that passes every security review, yet still be illegal in one jurisdiction because of a vague “digital asset platform” definition. The Mangione case teaches us that the law is not a single test; it is a series of tests administered by different sovereigns, each with its own passing grade.
Contrarian: The Pragmatic Test
Some in the crypto community will argue that dual sovereignty is actually a feature, not a bug. They will say that multiple jurisdictions create a “laboratory of innovation,” where DAOs can choose the most favorable regulatory environment and operate there. This is the regulatory arbitrage thesis. It is seductive. But it is wrong.
The Mangione case reveals the fatal flaw: you cannot choose your jurisdiction when your users are everywhere. A DAO that operates globally cannot avoid the long arm of the most aggressive regulator. The moment a U.S. citizen interacts with your protocol, you are subject to U.S. law. The moment a New Yorker votes on a governance proposal, that action is a “solicitation” under New York’s Martin Act, one of the most powerful securities laws in the country.
I’ve seen this play out in DeFi lending protocols. The interest rate models used by Aave and Compound are, in my opinion, completely arbitrary—they have nothing to do with real market supply and demand. They are set by governance votes that are dominated by a few whales. When those rates cause a liquidation cascade that wipes out a small investor in California, the DAO’s token holders and developers become potential defendants. The dual sovereignty doctrine means they can be sued in federal court, state court, and even in the courts of the investor’s home country.
The conventional wisdom says that “code is law” and that smart contracts are self-executing and therefore beyond the reach of courts. The contrarian—and correct—view is that the law is not a single sovereign. It is a network of overlapping, sometimes conflicting authorities. And when the code fails, the law will step in, not just once but many times.
Takeaway: Build for Humans, Not Just Nodes
The Mangione case is not about blockchain. But it is about a fundamental truth that the blockchain industry has ignored for too long: legal systems are not monoliths. They are ecosystems of competing sovereigns, each with the power to prosecute the same act.
For DAOs, this means that governance design must include jurisdiction risk assessment as a core feature—not an afterthought. Token holders should know which legal system they are participating in. Developers should build in “geofencing” mechanisms that restrict certain actions to compliant jurisdictions. And the industry must push for regulatory clarity that recognizes the decentralized nature of these systems, rather than forcing them into a 50-state patchwork.
I’ve spent the last seven years helping projects understand that education is the ultimate yield. The yield of understanding how the law actually works. The yield of designing systems that are not just technically robust but legally resilient. The Mangione case is a warning. The next one could be your DAO.
Build for humans, not just nodes. Because the nodes don’t have to face a jury in New York.