However, this Supreme Court decision was only a temporary setback for the Nativist movement. In 1882, the Chinese Exclusion Act had made it unlawful for Chinese laborers to enter the United States for the next 10 years and denied naturalized citizenship to Chinese already here. Initially intended for Chinese laborers, it was broadened in 1888 to include all persons of the "Chinese race". And in 1896, "Plessy v. Ferguson" effectively canceled "Yick Wo v. Hopkins", by supporting the "separate but equal" doctrine. Despite this, Chinese laborers and other migrants still entered the United States illegally through Canada and Latin America, in a path known as the Chinese Underground Railroad.