America has been described as a nation of immigrants, and connections between immigrant settlement and national identity have long endured. These themes are examined in this course, including the centuries of immigrant waves, conflicts over ethnic acceptability, restriction, and exclusion, the rise and durability of nativist hostilities, and major political actions taken to regulate immigrant arrival. Controversial topics of ethnic-identity, border-control, immigrant humanitarian crises, migrant-work, and the continued politicization of immigration illuminate a historical theme with enduring impact today.