Immigration & Nationality law. He represents individuals and companies in the San Francisco Bay Area and have prosecuted cases before the Immigration Courts and the Immigration & Naturalization Service offices in Miami, Portland, Los Angeles, New York, Reno, San Francisco, the California Service Center and U.S. Embassies and Consulates in Barcelona, Beijing, Guangdong, Hong Kong, Kaoshung, London, Nuevo Laredo, Shanghai and Taipei. His law firm's website is: http://www.jwulaw.com .