The first significant law that restricted immigration into the United States of an ethnic working group. When the California Gold Rush began in 1848, many Americans and immigrants, including many Chinese, came. In the 1860s, authorities from the Central Pacific Railroad began hiring laborers to work on the Transcontinental Railroad Project. The Americans were unwilling to work those laborious jobs, but the Chinese were willing to. This gave the Chinese jobs, and the Americans saw that as the Chinese taking away the jobs of Americans (saw themselves as threatened). Many other Acts/Laws were passed to restrict the Chinese in America.