Treasury Department officials defended artificial intelligence tools used to screen sanctions compliance Tuesday after FinCEN reported approximately 18,000 erroneous payment blocks in the first quarter tied to automated name-matching models. House Financial Services members demanded fixed appeal timelines for humanitarian organizations whose accounts froze when algorithms flagged transliteration variants of common Arabic and Cyrillic names.

Under Secretary Brian Nelson said AI reduced true positive identification of sanctioned entities by 22 percent compared with legacy rule-based systems but acknowledged false positives surged when banks applied vendor thresholds tuned for conservative compliance. Treasury opened a 60-day comment period on revised guidance balancing enforcement with legitimate aid flows.

Case Studies

Three registered nonprofits testified their wire transfers for medical supplies stalled an average of eleven days while compliance staff overturned model flags. One organization serving Ukrainian refugees documented 47 blocked transactions in March alone, each requiring manual review at two intermediary banks using different vendor models.

Treasury's Office of Foreign Assets Control said it does not mandate specific AI vendors but banks choose automated tools to manage exploding transaction volumes. OFAC maintains the Specially Designated Nationals list; models approximate phonetic similarity beyond exact string matches, producing collateral flags.

Banking Industry View

American Bankers Association witnesses said institutions face steep penalties for missing sanctioned payments and therefore bias toward false positives. They requested safe harbor when banks follow Treasury-published tuning parameters for humanitarian corridors announced in February.

Compliance software firm Chainalysis testified that hybrid systems combining AI with analyst review reduce error rates when banks staff 24-hour escalation desks. Smaller regional banks said they cannot afford round-the-clock teams and rely on automated holds by default.

Legislative Proposals

Representative Maxine Waters introduced language requiring Treasury to certify vendor models used by banks holding more than $50 billion in assets and to publish aggregate false-positive rates quarterly. Republican members supported faster appeals but opposed vendor certification as regulatory overreach.

Treasury said it will pilot a shared escalation portal connecting flagged nonprofits with OFAC analysts within five business days. Pilot participants must register credentials in advance, a requirement aid groups called burdensome but preferable to indefinite holds.

International Dimensions

European banks processing dollar-denominated humanitarian wires face parallel U.S. screening requirements, doubling model exposure. Treasury officials coordinated with EU counterparts on synchronized guidance expected in September.

Sanctions lawyers said litigation challenging erroneous blocks increased 40 percent year over year. Courts generally defer to Treasury on national security but have ordered expedited review in cases involving licensed medical exports.

What Changes Next

Comment period closes August 28. Treasury pledged final guidance before fiscal year end. Banks said they will retune models once parameters clarify acceptable false-positive rates for licensed humanitarian payments.

Watchdog groups will monitor whether revised rules reduce average hold times without increasing evasion by sanctioned actors using generative identity documents to exploit loosened thresholds.