The 19th Amendment was ratified on August 18, 1920, a year after being passed by Congress. It extended the right to vote to many women, but not all. Excluded from this landmark constitutional victory were women like Mabel Ping-Hua Lee, who was born in Guangzhou (then Canton), China, in 1896, but who immigrated to New York as a child. From 1882 to 1943, Chinese immigration to the United States was severely limited under the Chinese Exclusion Act. The Chinese Exclusion Act inhibited rights of Chinese American laborers and prevented Chinese immigrants from becoming citizens. Because of this act, Mabel Lee could not become a citizen, and therefore could not vote. Yet she and others still fought for universal suffrage and equality. A close look at documents related to the case of Mabel Ping-Hua Lee can serve as a springboard into an engaging classroom lesson on the Chinese Exclusion Act and its impact on the voting rights of women in the United States.