Why Section 604 Blocks the CLARITY Act

On June 10, White House officials hosted law enforcement groups for nearly 90 minutes to resolve the provision most likely to stall the CLARITY Act before a Senate floor vote. The meeting drew around 20 attendees, with developer protections drawn from the Blockchain Regulatory Certainty Act (BRCA) dominating the agenda, as Eleanor Terrett reported.

Section 604 of the Senate draft defines a “non-controlling developer or provider” as one lacking the legal right or unilateral ability to initiate user transactions without another party's approval. Under that definition, the provision limits money-transmitter treatment to parties who actually control or move assets. Developers who write distributed-ledger software, provide self-custody tools, or support blockchain infrastructure would fall outside that classification.

Sen. Cortez Masto, in a statement after the Senate Banking vote, said the current version “undermines law enforcement's ability to trace illicit finance and recover victims' money, while at the same time creating a more challenging environment to prosecute criminals for knowingly transmitting illicit funds.” Her amendments targeting decentralized platform enforcement were ruled out of order during the markup before Chairman Tim Scott later reinstated several others.

The Fraternal Order of Police echoed that view. In an April 21 letter to Senate Banking leadership, the FOP said Section 604 would limit prosecutors' ability to pursue financial crime cases involving crypto, arguing the safe harbor could strip law enforcement of statutes used to prosecute criminals operating on digital asset infrastructure. The fear is prosecutorial: broad safe-harbor language gives criminals a structural shield by protecting the layers of infrastructure prosecutors currently use as pressure points.

Industry backers point to the numbers to make their case. TRM Labs estimated illicit crypto volume reached $158 billion in 2025, up nearly 145% from 2024. The FBI's 2025 Internet Crime Report found crypto investment fraud alone generated $7.2 billion in reported losses. White House crypto adviser Patrick Witt called the CLARITY Act a “pro-regulatory, pro-enforcement bill” during a Blockchain Association town hall, pushing back against groups that argue the bill falls short on financial crime.

A coalition supported by the Blockchain Association submitted a letter signed by 160 former law enforcement, intelligence, and national security officials, arguing the legislation would improve oversight through expanded sanctions tools, greater coordination with Treasury, and updated asset-seizure powers. TRM also argues that criminal liability for knowing facilitation of criminal proceeds survives BRCA under 18 USC § 1960(b)(1)(C). The safe harbor covers non-controlling developers, and knowing participants in illicit finance retain full criminal exposure under existing statute. The industry's core pitch: regulated, US-based markets give investigators better visibility than developers pushed offshore by legal uncertainty.