Tiffany Derentz is a Senior Counsel in the Washington, D.C., office of Berry Appleman & Leiden LLP. She formerly served in the U.S. State Department’s Bureau of Consular Affairs as a senior adviser to the Chief Legal Adviser for immigration affairs, and was at the forefront of legal issues impacting consular operations at U.S. Embassies and Consulates. Tiffany has been a key adviser to senior leadership within the Visa Office, the Bureau of Consular Affairs, the White House and other federal agencies on all aspects of immigration law, including implementation of presidential proclamations under three administrations.