On Monday, software developer Michael Lewellen filed a comprehensive reply brief in the United States Court of Appeals for the Fifth Circuit, escalating his legal challenge against the Department of Justice (DOJ). At the heart of the dispute is the federal government’s aggressive interpretation of 18 U.S.C. § 1960, a criminal statute governing unlicensed money-transmitting businesses. Lewellen, the creator of a non-custodial crowdfunding platform titled "Pharos," argues that the DOJ’s broad reading of the statute creates a chilling effect, effectively criminalizing the act of publishing decentralized software by labeling developers as money transmitters.
The filing marks a critical juncture in the ongoing tension between the cryptocurrency development community and federal regulators. As legislative efforts like the Blockchain Regulatory Certainty Act (BRCA) remain stalled in Congress, the judicial branch has become the primary battleground for determining whether the mere act of writing and releasing code can be equated to the operation of a financial institution.
Chronology of the Legal Conflict
The roots of the current litigation trace back to Lewellen’s initial pre-enforcement challenge filed in the Northern District of Texas. Seeking a declaratory judgment, Lewellen aimed to establish that the publication of non-custodial software—which does not require the developer to hold or control user funds—falls outside the scope of 18 U.S.C. § 1960.
The case gained momentum following a series of high-profile DOJ enforcement actions against decentralized finance (DeFi) developers. In response, the district court initially dismissed the suit, citing a lack of a "credible threat" of prosecution. This determination was heavily influenced by a policy memo issued by then-Deputy Attorney General Todd Blanche regarding the DOJ’s enforcement priorities in the digital asset space. Lewellen’s appeal to the Fifth Circuit contends that this dismissal was premature and failed to account for the persistent legal risks posed by the DOJ’s interpretation of existing statutes.
The Conflict of Interpretation: DOJ vs. FinCEN
A central pillar of Lewellen’s argument is the stark divergence between the DOJ’s enforcement strategy and the guidance provided by the Financial Crimes Enforcement Network (FinCEN). In 2019, FinCEN issued formal guidance explicitly stating that the development of software, in and of itself, does not constitute money transmission. The guidance emphasizes that the control of customer funds is a fundamental prerequisite for being classified as a money-services business (MSB).
Despite this, the DOJ has frequently bypassed or outright rejected these parameters in its criminal filings. In the cases of Tornado Cash and Samourai Wallet, the DOJ pursued charges under 18 U.S.C. § 1960, effectively treating the developers as though they were operating financial platforms. The DOJ has previously characterized FinCEN’s guidance as lacking "authoritative effect" in the context of criminal prosecution, a stance that has alarmed legal experts and the developer community alike. By asserting that publishing code can be classified as operating an unlicensed money-transmitting business, the DOJ is arguably attempting to reshape regulatory definitions through the criminal justice system rather than through established rulemaking processes.
Arguments for Judicial Standing
The DOJ’s defense has largely relied on the argument that Lewellen lacks standing because he has not yet been subjected to an investigation or specific enforcement action. Government attorneys have described his fear of prosecution as "too generalized."
In his reply brief, Lewellen counters this by asserting that the entire purpose of a pre-enforcement challenge is to resolve legal ambiguity before a developer is forced to risk federal prison. He argues that he should not be required to "wait around for the government to investigate or prosecute him" to clarify whether his lawful professional activities constitute a felony. Furthermore, he contends that the Fifth Circuit must accept his factual allegations—namely, the nature of Pharos’s operation—as true at this stage of the proceedings.
Lewellen’s brief further posits that the recent prosecutions of developers in the Tornado Cash and Samourai Wallet cases serve as clear evidence that his fear is well-founded. He argues that the DOJ’s willingness to ignore the non-custodial nature of those platforms demonstrates a broad, aggressive interpretation of § 1960 that could easily be applied to Pharos.
The Role of the Blanche Memo
The DOJ has leaned heavily on the memorandum issued by Todd Blanche to argue that there is no immediate threat to developers who are not engaged in the specific illicit activities outlined in the memo. However, the legal team representing Lewellen argues that the memo is insufficient for several reasons:
- Discretionary Nature: The memo represents an enforcement priority list rather than a binding legal interpretation. It can be rescinded or altered by the DOJ at any time, leaving developers with no permanent protection.
- Post-Suit Issuance: The memo was released after the initial lawsuit was filed, meaning it cannot retroactively negate the standing that existed at the time of the complaint.
- Statutory Authority: The memo does not renounce the DOJ’s underlying legal authority to prosecute non-custodial software developers under § 1960. It merely outlines when the DOJ might choose to exercise its discretion, which does not provide the legal certainty required to foster innovation.
Broader Implications for the Blockchain Industry
The failure of the Blockchain Regulatory Certainty Act to pass as part of the broader Clarity Act has left the industry in a state of regulatory limbo. While some proponents had hoped for a legislative fix, analysts note that even the most comprehensive versions of the BRCA were limited in scope. Specifically, they likely would not have provided protection against the specific subsections of § 1960 that the DOJ has used to target developers.
This leaves the judiciary as the final arbiter. A victory for Lewellen in the Fifth Circuit could establish a vital precedent, shielding software developers from being classified as money transmitters simply by virtue of the code they publish. Conversely, if the courts continue to uphold the DOJ’s broad interpretation, the barrier to entry for decentralized software development in the United States could become prohibitively high, potentially forcing innovation into jurisdictions with more predictable regulatory frameworks.
Conclusion: The Future of Developer Rights
The case of Michael Lewellen versus the Department of Justice is more than a dispute over a specific piece of crowdfunding software. It is a fundamental contest over the scope of government power in the digital age. As the DOJ continues to leverage criminal statutes to regulate technology, the legal community is increasingly focused on the requirement for clear, predictable definitions of what constitutes a financial business.
For developers, the stakes are existential. Without clear judicial guidance that distinguishes between providing a tool and operating a financial service, the risk of prosecution remains a significant deterrent to the development of open-source software. As the Fifth Circuit reviews the reply brief, the decision will likely set the tone for how federal prosecutors interact with the crypto-asset industry for years to come. The outcome will ultimately determine whether the United States will continue to be a hub for blockchain innovation or whether legal uncertainty will compel the industry’s most talented builders to look elsewhere.
