Like other immigrant groups, the Chinese came to North America in search of a better life. They sought to escape poverty and a harsh government. During the 19th century, hardworking Chinese immigrants helped build America's railroads and mine gold and silver. However, they often suffered persecution at the hands of white Americans, many of whom feared that the Chinese would take their jobs. In 1882, the U.S. Congress passed a law designed to restrict immigration from China. Further legislation virtually shut off Chinese immigration in the 1920s. Still, Chinese Americans found ways to prosper.