Illegal immigration to the United States is the unlawful entry of foreign nationals into the United States, and the remaining in the country of admitted foreign nationals after the expiration of their U.S. visas or parole documents. Earlier naturalization laws were followed by the 1875 and 1882 Acts prohibiting Chinese immigrants. A 1906 act required immigrants to learn English in order to become citizens, and a 1917 act defined aliens with a long list of undesirables, including most Asians. The U.S. had otherwise nearly open borders until the early 20th century, with only 1% rejected from 1890-1924. A 1924 act established visa requirements and enacted quotas for immigrants from specific countries, especially targeting Italians and Eastern Europeans. Research shows that illegal immigrants increase the size of the U.S. economy, contribute to economic growth, enhance the welfare of natives, contribute more in tax revenue than they collect, reduce American firms' incentives to offshore jobs and import foreign-produced goods, and benefit consumers by reducing the prices of goods and services. Economists estimate that legalization of the illegal immigrant population would increase the immigrants' earnings and consumption considerably, and increase U.S. gross domestic product. Does immigration increase the risk of crime? Which country citizens are not allowed to have US citizenship? Is Mexico really a threat? Get this well researched book to find out!