More than 5.2 million immigrants enter the country through 1890. A large influx from China prompts the Chinese Exclusion Act of 1882, which denies Chinese laborers entry into the U.S. and citizenship. The Immigration Act of 1882 levies a 50-cent tax on immigrants landing at U.S. ports and makes several categories of immigrants, including “lunatics,” ineligible for citizenship. Over time, the banned list includes, among others, convicts, prostitutes and polygamists.