That is a group opposed to Immigration into their country.
Anti-immigration
They were anti-Catholic, and nativists (opposed to Immigration and were suspicious of immigrants).
The American Immigration Control Foundation (AICF), founded in 1983, is an anti-immigration group which has grown more shrill in recent years.
anti- aliens
Mexican Immigration increased
eugenics
Know nothing party
Yes it still does
President Millard Filmore supported anti-immigration during the 1800's. President Millard Filmore became one of the leaders of the Know Nothing party.
they developed bcuz of the way the immigrants acted
anti- aliens
Two well-known anti-immigrant organizations in the United States are the Federation for American Immigration Reform (FAIR) and the Center for Immigration Studies (CIS). FAIR advocates for reduced immigration levels and stricter immigration enforcement, while CIS focuses on research and policy analysis to promote the idea that immigration negatively impacts American society and the economy. Both organizations have been criticized for their positions and claims regarding immigration.