Between 1870 and 1920, around 20 million immigrants arrived in the United States from Europe, Asia, the West Indies, and Mexico. Many Europeans escaped religious persecution or sought independence and jobs, while Chinese often sought their fortune in the Gold Rush. Immigrants arrived by steamship in New York or San Francisco and had to pass physical exams and document inspections. However, nativism against immigrants was common, especially Catholics, Jews, Irish, Chinese and other Asian groups. The Chinese Exclusion Act of 1882 banned Chinese immigrant workers.