Mr. Cheng is a lawyer retired from Osler, Hoskin and Harcourt LLP, a major Canadian based international law firm. He regularly appeared as counsel before the Canadian International Trade Tribunal, federal courts, on NAFTA and WTO matters and advised on NAFTA and other trade agreements. He represented and provided strategic advice to corporations including startups, trade associations and governments in anti-dumping, countervail and safeguard litigation, customs matters, commodity tax and government procurement disputes, as well import and export monitoring and controls.