President Donald Trump announced last week a wide-ranging immigration plan that would change how certain immigrants would be allowed in the U.S. His proposal includes a civics test for entrance that some critics say could exclude many high-skilled immigrants. Other critics called the idea of a civics exam bizarre and charged that some U.S. citizens even might fail such a test.

If adopted, this would not be the first time the U.S. has embraced a physical or mental exam for immigrants seeking just to get into the country outside of becoming a citizen. Here's a look at how the U.S. used entrance exams on aspiring immigrants throughout history:

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