Should there be
open, closed or semi-restricted immigration policy in the United States?

Semi-restricted because there can always be dangers meaning immigration policy shouldn’t be open. However, there are still needed immigrations leading to the fact that there shouldn’t be closed immigration policy. Therefore, immigration policy in the United States should be semi-restricted.

Britain and its empire stood alone against hitler and mussolini. in june 1941, hitler broke the non-aggression agreement with stalin and germany invaded the soviet union. in december, japan attacked the us and britain. the main lines of world war ii had formed.