“No person shall receive any preference or priority or be discriminated against in the issuance of an immigrant visa because of his race, sex, nationality, place of birth, or place of residence, except as specifically provided in section 101 (a) (27), section 201 (b), and section 203:”
Prior to this Act, the immigration reform was based on national-origin quota system in 1924, which considered ones nationality under a quota.The civil rights movement help people see how this quota was discriminatory. In 1965 another act was in place to change this quota. Immigration worked to keep families together, by allowing an entire family to enter.Those who were skilled and of use to the United States were allowed in.
Sources: Immigration and Naturalization Act of 1965, § Sec. 2-202 a.