Where can I get study materials for the citizenship test? We’ve put together a detailed guide about how to prepare for the citizenship test. Related articles Can I submit my marriage green card application to USCIS online? The Consular Electronic Application Center (CEAC) website keeps freezing. Do you have any tips? Is a general evaluation sufficient for my educational documents? Is it possible to postpone or reschedule our green card interview if my spouse is deployed abroad? Can I travel outside the United States with my existing travel/work combo card, while my renewal applications are pending?