Nathan advises and represents for-profit and not-for-profit organizations in a wide array of government contracts, grants, and international trade matters, including transactions, disputes, compliance, and risk management.

With respect to government contracts and grants, Nathan counsels contractors, subcontractors, grantees, lenders, lessors, suppliers, and other parties on legal matters such as acquisition planning, teaming and subcontracting, proposal review, protecting intellectual property, compliance and managing risk under numerous government clauses and regulations, bid protests, requests for equitable adjustment, claims under the Contract Disputes Act, cybersecurity, mandatory disclosures, suspension and debarment matters, Small Business Administration regulations, and the successful closeout of contracts and subcontracts. This work includes representation before the Government Accountability Office, the Court of Federal Claims, the Court of Appeals for the Federal Circuit, the Boards of Contract Appeals, and a long list of federal Executive Branch agencies, state and local agencies, and quasi-governmental organizations. In addition, Nathan has served as a federal agency-approved outside compliance monitor to fulfill obligations under an administrative compliance agreement.

With respect to international trade, Nathan focuses upon the exportation and importation of goods, technologies, and services, including matters under the jurisdiction of the Commerce Department’s Bureau of Industry and Security (BIS), the State Department’s Directorate of Defense Trade Controls (DDTC), the Treasury Department’s Office of Foreign Asset Controls (OFAC), the Department of Energy’s National Nuclear Security Administration (NNSA), the Department of Homeland Security’s Customs and Border Protection (CBP), and the Census Bureau.  Nathan has helped clients obtain export control licenses, technical assistance agreements (TAAs), and other authorizations for both physical and “deemed” exports involving “dual use” and “munitions list” items, as well as items subject to the jurisdiction of the NNSA. He has helped clients lead internal reviews and investigations on both a voluntary and non-voluntary basis, conduct due diligence, close numerous transactions, and successfully resolve many compliance issues.  On the import side, Nathan helps companies adapt their supply chains to the ever-changing tariff landscape, review and defend the classification and origin of products, conduct internal reviews, submit voluntary self-disclosures, and file protests or request binding rulings.

In addition, Nathan advises organizations on general business law issues such as contract drafting, software licensing, mergers and acquisitions, and escheat (unclaimed property) law.