Final answer:
The United States no longer has visa requirements as an immigration policy due to the Immigration and Nationality Act of 1965 that repealed national ethnic quotas and introduced family reunification, employment skills, and refugee admissions.
Explanation:
Visa requirements no longer exist as an immigration policy in the United States. The Immigration and Nationality Act of 1965 repealed national ethnic quotas and introduced a system focused on family reunification, employment skills, and refugee admissions. The act expanded admission preferences to include siblings of U.S. citizens, skilled and unskilled workers, and refugees from Communist-dominated countries or affected by natural disasters.
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