1. The article challenges the notion that today's immigrants are unassimilated, arguing that this sentiment has been expressed about previous waves of immigrants throughout American history. It highlights how Irish, Italian, and Jewish immigrants in the late 19th and early 20th centuries were also perceived as unassimilable, but ultimately became fully integrated into American society over time.

2. The article emphasizes that the process of assimilation is gradual and takes multiple generations, as evidenced by the experiences of past immigrant groups. It suggests that the concerns about the lack of assimilation among contemporary immigrants, particularly from Latin America, are not fundamentally different from the concerns expressed about earlier waves of immigrants.

3. The article concludes by arguing that the pattern of assimilation for today's immigrants is likely to follow a similar trajectory as previous immigrant groups, with their descendants becoming fully integrated into American culture and society over the course of several generations. It suggests that the fears about the lack of assimilation are often overblown and not supported by historical evidence.