Both European and Asian immigrants came to the United States seeking to improve their economic well being, explains Dr. Melissa May Borja, assistant professor in the Department of American Culture at the University of Michigan. But Chinese immigrants were regarded as a bigger threat.
"They were seen as a racial threat to a pure white America. They were seen as an economic threat to free white labor. They were depicted as a disease threat—a lot of anti-Chinese rhetoric hinged on portraying Chinese people as filthy and disease-ridden. They were also seen as a religious and moral threat as heathens who threatened a Christian America.”