The first Japanese arrived in the U.S. in 1869 with the arrival of 22 samurai and one woman, settling in Placer County, California, to establish the Wakamatsu Tea and Silk Farm Colony. Japanese were recruited to work on plantations in Hawaii, beginning in 1885. By the late 19th Century, more Japanese emigrated to Hawaii and the American mainland. The Issei, or first-generation Japanese immigrants, were not allowed to become U.S. citizens because they were not "a free white person", per the United States Naturalization Law of 1790. This did not change until the passage of the Immigration and Nationality Act of 1952, known as the McCarran-Walter Act, which allowed Japanese immigrants to become naturalized U.S. citizens.