What happened
The U.S. Treasury’s Office of Foreign Assets Control (OFAC) administers the sanctions programmes that form a central plank of U.S. foreign policy and national security enforcement. These programmes vary in scope, ranging from comprehensive country-level restrictions to more selective measures targeting specific sectors, entities, or individuals. Across both approaches, OFAC relies on two principal tools: the blocking of assets and trade restrictions.
To support compliance and enforcement, OFAC maintains two key reference lists. The Specially Designated Nationals (SDN) List identifies individuals and entities subject to asset blocking and, in most cases, a prohibition on transactions by U.S. persons. The Consolidated Sanctions List captures non-SDN parties who are nonetheless subject to certain restrictions, reflecting the more graduated nature of some sanctions regimes.
Among its issue-specific programmes, OFAC operates Rough Diamond Trade Controls, a measure aimed squarely at a commodity supply chain historically associated with illicit financing and conflict resources. OFAC also administers a Transnational Criminal Organizations programme, extending sanctions tools beyond state actors to organised criminal networks operating across borders.
Why it matters
For compliance professionals working in trade finance and correspondent banking, OFAC’s dual reliance on asset blocking and trade restrictions underscores why sanctions screening cannot be treated as a standalone control. Trade restrictions directly intersect with the mechanics of TBML: falsified documentation, transshipment, and layered corporate structures are frequently the means by which sanctioned trade flows are disguised. The existence of both comprehensive and selective programmes means that risk exposure is rarely binary — a counterparty or jurisdiction may face partial restrictions rather than an outright prohibition, demanding more granular due diligence.
The presence of commodity-specific controls, such as those on rough diamonds, and organisation-specific programmes targeting transnational criminal groups, signals that sanctions exposure extends beyond state-sponsored trade to supply chains and criminal networks more broadly. This broadens the scope of what trade compliance teams must monitor.
Context
OFAC’s list-based architecture — distinguishing SDNs from other restricted non-SDN parties — provides the structural backbone against which trade finance institutions and correspondent banks calibrate screening thresholds and escalation procedures, particularly where trade documentation and counterparty structures may obscure the true parties to a transaction.