Why did some people oppose the immigration act of 1965?

they wanted to have a say in how immigration laws were implemented.

they were influenced by the civil rights movement.

they feared new immigrants would change american culture.

The correct option is: "They feared new immigrants would change American culture."

The Immigration and Nationality Act of 1965 abolished the national quotas imposed by the National Origins Formula, in force in the United States since the Immigration Act of 1921. It was proposed by Rep. Emanuel Celler, of New York, co-sponsored by the United States. Senator Philip Hart of Michigan, and strongly supported by Senator Ted Kennedy of Massachusetts. An annual maximum limit of 300,000 visas was established for immigrants, including 170,000 for countries in the Eastern Hemisphere, with no more than 20,000 per country. In 1968, the annual limitation for the Western Hemisphere was set at 120,000 immigrants, with visas available depending on the order of arrival. However, the number of visas for family reunification was unlimited.