Which of the following tools was most effectively used by Congress to limit the number of immigrants?

A. literacy tests
B. quota system
C. health exams
D. background cheks

Which of the following statements inmigration are most accurate? Select all that apply. (2 points)

A. Immigrants have not suffered discriminatory practies
B. Quotas were used to restrict immigrants from certain regions
C. Immigrants easily assimilate into American society
D. Immigrants often come to escape poor living conditions at home