Answer:
On May 26, 1924, the Act on the limitation of immigration of aliens to the United States, known as the Johnson-Reed Act, was passed. The law determined changes in immigration policy, provided for a reduction in the annual quota of immigrants to 164,667 people. The extensive document contained 32 sections, established the procedure for issuing visas abroad, gave definitions of an immigrant and non-immigrant, described the procedures for admission to the country during the transition period before the introduction of quotas for the country from July 1, 1927.
The main change was the establishment of an annual quota for each country, which amounted to 2% of the number of natives living in the United States registered in the 1890 census. For each country, a minimum number of 100 immigrants was established.
Since each quota had to correspond to the proportion of the population already living in America, the quotas for North Europeans were disproportionately higher than the quotas for potential immigrants from Eastern and Southern Europe. The purpose of that law was to maintain the ethnic composition that existed in America at that time. Thus, immigration from Eastern and Southern Europe, as well as Africa, was limited.
The Johnson-Reed Act of 1924 was designed to prevent the growing influence of immigrants from southern and eastern Europe.
The new system, based on the principle of national origin and designed to suspend further ethnic changes in the US population, was supposed to enter into force in 1927, replacing the formal quota system. The system based on "national origin" was finally introduced on July 1, 1929.
Explanation:
