The effect of anti-immigration settlements on immigrants in the United States has been largely negative. These settlements have limited the number of immigrants allowed to enter the country, and have made it more difficult for those already in the country to stay. This has had a particularly negative impact on immigrants from countries that are not traditionally seen as desirable sources of immigration, such as those from Latin America and the Middle East.
World War II had a significant impact on anti-immigration settlements in the United States. During the war, the US government implemented a number of measures to restrict immigration, including the National Origins Act of 1924, which limited the number of immigrants from certain countries. This act was later replaced by the Immigration and Nationality Act of 1952, which further restricted immigration from certain countries. These laws, combined with other measures such as the Chinese Exclusion Act of 1882, have had a lasting impact on immigration to the United States.