Today, more immigrants come to the United States from Asia and . This change is partly due to the Immigration and Naturalization Act of 1965, which quotas. Each year, the United States accepts about refugees. In addition, about undocumented workers are living in the United States illegally.

The Immigration and Naturalization Act of 1965 abolished the earlier national-origins quota system, which had favored immigrants from some countries over others. Removing those quotas helped increase immigration from Asia and other regions. Therefore, “abolished” correctly completes the sentence.

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