Becoming a U.S. citizen is an arduous process. The U.S. Citizenship and Immigration Services (USCIS) recently revised the test to add more questions about American government, civics, history and geography. Applicants for U.S. citizenship are asked 20 out of 128 test questions. To pass the test, applicants must answer at least 12 questions (60%) correctly. Can you do better than prospective citizens? We selected 20 of the more difficult questions that may be asked. How well do you remember your high school civics? If you can answer 12 questions correctly, you get to keep your citizenship. Good luck.