Immigration is at the root of American identity and prosperity. Yet the place of immigrants within U.S. society has always been precarious. Sometimes immigrants have been welcomed, even recruited, while at other times immigrants have faced nativist backlash. These two responses toward immigration often existed simultaneously. reflecting historical tensions between American national identity and American economic prosperity. this lecture will contextualize the present-day controversy over immigration by discussing the past 200 years of immigration history to the United States.