Final answer:
Between 1903 and 1914, immigrants were most afraid of the mandatory literacy test. The Immigration Restriction League proposed written exams that were based on an immigrant's native language, making it more difficult for immigrants who couldn't read or write in any language to pass the test.
Step-by-step explanation:
Between 1903 and 1914, immigrants were most afraid of the mandatory literacy test. The Immigration Restriction League proposed written exams that were based on an immigrant's native language, making it more difficult for immigrants who couldn't read or write in any language to pass the test. Although a law requiring new arrivals to pass a very basic test in the language of their choice was approved by Congress, it was vetoed by President Grover Cleveland.