That ambivalence dates back to the nation’s founding (see timeline slideshow, below). In 1776, most White Americans were the descendants of Anglo-Saxon Protestants from the British Isles who came in search of economic opportunity or to escape religious or political persecution. In addition to the Native Americans who had inhabited the land for centuries, there were also enslaved people brought from Africa and large numbers of Dutch, Spanish, and Germans.
Americans have often been wary of welcoming foreigners. Even before America’s founding, Benjamin Franklin worried that German immigrants were taking over his state.
“Why should Pennsylvania, founded by the English, become a colony of aliens,” Franklin wrote in 1751.
The 19th century brought very different immigrants, starting with the Irish and later Italians, both groups largely poor farmers and Catholic. Then came the Chinese, who arrived in large numbers on the West Coast during the Gold Rush and later helped build the railroads, and Jews fleeing pogroms in Russia and Eastern Europe.
Before 1875, America placed few restrictions on immigration. Westward expansion, the industrial revolution, and the abolition of slavery created enormous demand for workers.
“If you were European and you were not a Communist and you were not ill, you could enter,” says Gary Gerstle, a professor of American history at the University of Cambridge, in England. “And extraordinary numbers of people were coming.”