The landmark legislation that reshaped U.S. immigration policy in 1965 was the Hart-Celler Act. This act abolished the quota system based on national origin, which had been established in the 1920s. Instead, it implemented a new system prioritizing family reunification and skilled immigrants, significantly altering the demographic landscape of the United States. As a result, immigration from Asia, Latin America, and other regions increased. This legislation marked a shift towards a more inclusive policy, changing the narrative of American identity and paving the way for greater cultural diversity in the country.