PolicyBrief
H.R. 4220
119th CongressJun 27th 2025
Gun Violence Prevention Through Financial Intelligence Act
IN COMMITTEE

This bill directs FinCEN to gather financial data from institutions to understand how domestic extremists procure firearms and accessories for violent acts.

Madeleine Dean
D

Madeleine Dean

Representative

PA-4

LEGISLATION

FinCEN Gets 1 Year to Start Tracking Extremist Firearm Purchases Using Bank Data

This legislation, titled the Gun Violence Prevention Through Financial Intelligence Act, sets up a new mechanism for the federal government to track how domestic terrorists and violent extremists fund and acquire their weapons. Essentially, it directs the Financial Crimes Enforcement Network (FinCEN)—the agency that looks for money laundering and financial crimes—to investigate the purchasing patterns of firearms and accessories used in “lone actor” attacks in the U.S. This is a big deal because it formally pulls financial institutions into the national security intelligence effort related to gun violence, going beyond their traditional focus on fraud and global terrorism financing.

The New Financial Watch List

Within one year of the bill becoming law, FinCEN must start asking banks and other financial institutions for transaction data to figure out how these extremists are buying their gear. The goal is to spot the financial red flags before an attack happens. FinCEN isn't going into this blind; the bill requires them to consult with the FBI, the ATF, and even firearm sellers before they design their data requests. Crucially, the data requests must be tailored based on the size of the financial institution. This means the local credit union isn't going to get hit with the same massive compliance burden as a mega-bank, which is a practical nod to the realities of bank operations.

Defining the Undefined

One of the most important, and potentially tricky, parts of this bill is the requirement for FinCEN to create formal definitions for terms like “firearm accessory,” “homegrown violent extremist,” “lone wolf,” and “lone actor” within 90 days. While “domestic terrorism” and “firearm” use existing legal definitions, these newer terms are wide open for interpretation. For the average person, this matters because how FinCEN defines a “lone wolf” dictates whose financial data the banks will be asked to flag. If the definitions are too broad, it could lead to the over-collection of data on law-abiding citizens who happen to be making perfectly legal purchases. This is where the rubber meets the road between solid intelligence and privacy concerns.

What Happens After the Data is Collected?

FinCEN has 540 days (about 18 months) from the law’s enactment to reach a conclusion. They have two options. Option A: If they gather enough useful information, they must issue a public advisory to financial institutions detailing the suspicious financial activity associated with extremist gun purchases. This advisory would essentially tell banks, “Watch out for these specific patterns.” Option B: If they don't get enough data to issue an advisory, they must send a detailed report to Congress explaining exactly why the data was insufficient, what problems they ran into, and how much information the financial institutions actually provided. This second option is important because it creates a paper trail, potentially setting the stage for future legislation that might grant FinCEN even broader data collection powers.