中国人排斥法
In 1882 Congress passed the Chinese Exclusion Act. By excluding all Chinese laborers from entering the country, the Chinese Exclusion Act severely curtailed the number of immigrants of Chinese descent allowed into the United States for 10 years. The law was renewed in 1892 and 1902. During this period, Chinese migrants illegally entered the United States through the loosely guarded U.S.-Canadian border.