One Unintended Result of the Immigration Legislation Signed by President

One unintended result of the immigration legislation signed by President Johnson in 1965 was "chain migration," under which​

A) ​more persons than anticipated from Africa and Asia with specified technical skills or education applied to immigrate.
B) ​some immigrants would reapply for residence repeatedly, making it hard to send them back to their home countries when their visas expired.
C) ​people from certain regions of foreign countries uncovered loopholes in the law allowing many more people than expected from certain villages, for example, to immigrate.
D) ​people repeatedly applied for immigration from different countries until they were successful, using fraudulent documentation that the U.S. immigration system was ill-prepared to evaluate.
E) ​immigrants would petition for their relatives to come to the United States.