Sibilla Grenon

Her practice includes counseling on U.S. Customs and Border Protection enforcement, including Withhold Release Orders, Uyghur Forced Labor Prevention Act due diligence, tariff classifications, country of origin determinations, and valuation issues. She regularly assists importers with risk assessments, internal compliance programs, and audits to minimize liability and enhance operational efficiency. Sibilla has experience with business and human rights, trade policy developments, sanctions, and import restrictions that affect a broad range of industries, including technology and consumer goods, energy, and critical minerals.

In addition to her trade work, Sibilla maintains a robust pro bono practice in immigration and asylum cases.

Prior to joining Crowell, Sibilla clerked for the Honorable Timothy M. Reif of the U.S. Court of International Trade. Before clerking, Sibilla was an associate in the litigation group of a law firm, where she represented clients on compliance issues concerning privacy and data security for large corporations in accordance with state, federal, and international privacy regulations (GDPR, CCPA, CPRA, TCPA, BIPA, and GLBA) and employment matters.  

Sibilla is a Rising Leader with the Aspen Strategy Group, a program that cultivates the next generation of rising leaders in national security and foreign policy. As a law student, Sibilla served as the articles editor for the Georgetown Journal of International Law, a fellow at the Institute of International Economic Law, and was a member of Georgetown’s francophone moot court team of the Concours d’Arbitrage International de Paris.