While serving as assistant trade commissioner, Smith again sought promotion to full trade commissioner. After an initial rejection, she sought help from Clara Burdette, president of the
California Federation of Women's Clubs, who appealed to
Herbert Hoover, the then-Secretary of Commerce and a personal friend. As it happened, Smith's appointment had already been confirmed by Julean Arnold, her immediate superior, and she took up the role on January 1, 1928. Smith was the first female trade commissioner in the Foreign Service. She also served as the registrar of the Chinese Trade Act of 1922. In that role, Smith was responsible for ensuring corporate compliance with registration requirements, sometimes litigating against firms herself in the
United States Court for China—becoming the third woman to be admitted to practice before the court in 1934. As trade commissioner, Smith was responsible for reporting on Chinese industry, infrastructure, and trade opportunities to the Department of Commerce; advising American business interests; serving as a liaison between American and Chinese businesses; implementing U.S. trade policy; and promoting the expansion of American trade in China. During her tenure, she was respected by her colleagues and by Americans doing business in China. Barbara Miller, in 1936, wrote for the
Los Angeles Times Sunday Magazine: "Business men visiting China generally agree, 'If you want accurate information on foreign trade—and want it today—go to Viola Smith. Smith was an avid motorist, driving thousands of miles in China throughout her career. She was considered an expert on roads in China, and she was regularly consulted by the Chinese government and American companies on road proposals and related business opportunities. As trade commissioner, she prioritized building roads as a means of increasing the import of American automobiles to China. In 1935, Smith began lobbying to bring
shortwave radio broadcasting to China, believing that there was demand among American expatriates in Asia and estimating the Shanghai market at approximately 12,000 listeners. She believed that this market would purchase American-made
receivers; that both American expatriates and Chinese listeners would purchase American goods advertised on radio programs; and that American radio would improve
China–United States relations. In 1937, she persuaded
General Electric to open
W6XBE, which rebroadcast
NBC's domestic radio programs to China from the
San Francisco Bay Area. The station launched on February 19, 1939. Based on feedback from other Americans in China, Smith worked to improve its programming, suggesting that the station "give succinct resumes of important American happenings and events, to be given by prominent persons identified with
American governmental, commercial, financial, and cultural life", such as "broadcasts of
Carnegie Hall concerts, symphony orchestras, military bands, and similar items". == Post-trade commissioner career (1939–1975) ==