In 1882, Congress passed a Chinese exclusion law that barred the entry of Chinese laborers for ten years. The Chinese thus became the first people to be restricted from immigrating into the United States on the basis of race. Exclusion was renewed in 1892 and 1902 and finally made permanent in 1904. Only in 1943 did Congress rescind all the Chinese exclusion laws as a gesture of goodwill towards China, an ally of the United States during World War...