What were the reasons navitists feared immigrants would negatively transform the American society?

What are the ways that America could restrict the entry of the undesirable?

What was the Literacy test?

Who was Breckinridge?

What was the problem that Breckingridge faced?

What was the solution that Breckingridge came up with?

What were the dangers that Breckinridge believed immigrants brought to the security of the country?

Why were refugees considered undesirable in the 1930'1940's?