Naturalization is the legal process by which immigrants become U.S. citizens. Congress holds exclusive constitutional power to set naturalization rules (Article I, Section 8). The process requires meeting specific requirements, passing tests, and taking the oath of allegiance.
Current requirements: hold a green card for at least five years (three if married to a U.S. citizen), be physically present in the country for at least 30 months of that period, demonstrate good moral character, pass an English language test (reading, writing, speaking), and pass a civics exam covering U.S. history and government. In September 2025, USCIS implemented a revised civics test and expanded "good moral character" review to include community involvement, employment history, and tax compliance. By fiscal 2024, USCIS had naturalized 818,500 people; roughly 536,000 applications were pending. About 9 million green card holders were eligible to naturalize as of early 2023.
Congress can change any part of this process: the wait period, the tests, the English requirement, or the good moral character standard. This congressional power is absolute—courts rarely second-guess Congress's naturalization rules.
Naturalization determines who becomes a citizen and on what terms. Since Congress sets the rules, naturalization policy shifts with political winds. Understanding that Congress controls this power shows how citizenship is a political choice, not a purely legal status.
People sometimes think there's a fixed, unchanging pathway to citizenship. Congress can change every aspect of naturalization—the wait time, the tests, the English requirement. All of these are congressional choices, not constitutional requirements.
Naturalization determines who becomes a citizen and on what terms. Since Congress sets the rules, naturalization policy shifts with political winds. Understanding that Congress controls this power shows how citizenship is a political choice, not a purely legal status.
People sometimes think there's a fixed, unchanging pathway to citizenship. Congress can change every aspect of naturalization—the wait time, the tests, the English requirement. All of these are congressional choices, not constitutional requirements.