31 CFR §535.503
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The Secretary of the Treasury reserves the right to exclude any person from the operation of any license or from the privileges therein conferred or to restrict the applicability thereof with respect to particular persons, transactions or property or classes thereof. Such action shall be binding upon all persons receiving actual notice or constructive notice thereof.