A green card and U.S. citizenship both give you the right to live and work in the United States for the rest of your life, but that is roughly where the similarity ends. In the green card vs. citizenship comparison, citizens can vote, cannot be deported, can sponsor a wider circle of family, and travel freely on a U.S. passport, while permanent residents face removal risk for certain convictions, lose their card after long absences abroad, wait five years for most federal benefits, and are shut out of federal jury duty and much of the federal workforce. Tax obligations, on the other hand, are essentially the same.
Deportation Risk Is the Core Difference
A green card holder can be deported. A citizen cannot. Every other difference between the two statuses flows from that fact.
Federal law lists specific grounds that make a permanent resident deportable. A conviction for an aggravated felony at any time after admission triggers mandatory removal.1Office of the Law Revision Counsel. 8 U.S.C. 1227 – Deportable Aliens The immigration definition of “aggravated felony” is broader than most people expect. It reaches offenses like theft or fraud with a sentence of one year or more, drug trafficking, and money laundering involving more than $10,000.2U.S. Citizenship and Immigration Services. Permanent Bars to Good Moral Character An aggravated felony conviction also permanently bars a person from ever naturalizing.
Beyond aggravated felonies, a resident can be deported for a conviction involving a controlled substance (with a narrow exception for personal possession of a small amount of marijuana), certain firearm offenses, domestic violence, or two or more crimes of moral turpitude.1Office of the Law Revision Counsel. 8 U.S.C. 1227 – Deportable Aliens Non-criminal grounds also exist, including abandoning residence or violating the terms of admission.
Citizens sit on much more solid ground. Naturalized citizenship can only be revoked if the government proves it was obtained through fraud or concealment of a material fact.3Office of the Law Revision Counsel. 8 U.S. Code 1451 – Revocation of Naturalization No criminal conviction, however serious, leads to denaturalization. A citizen can also lose nationality voluntarily by renouncing it, swearing allegiance to a foreign government with the intent to give up U.S. citizenship, or being convicted of treason.4Office of the Law Revision Counsel. 8 U.S.C. 1481 – Loss of Nationality Involuntary loss of citizenship is rare in practice.
Voting, Juries, and Public Office
Only U.S. citizens can vote in federal elections. Federal law makes it a crime for any non-citizen to cast a ballot in an election for President, Vice President, or members of Congress, punishable by up to one year in prison.5Office of the Law Revision Counsel. 18 U.S.C. 611 – Voting by Aliens A handful of local jurisdictions allow non-citizen voting in municipal races, but that authority exists entirely outside federal elections.
Federal jury service is also citizens-only. The federal courts’ policy states that all citizens have both the opportunity and obligation to serve on grand and petit juries in U.S. district courts.6Office of the Law Revision Counsel. 28 U.S.C. 1861 – Declaration of Policy Green card holders are excluded from the pool.
The Constitution bars non-citizens from the highest elected offices. Members of the House and Senate must have been citizens for years before serving, and the President must be a natural-born citizen.7Constitution Annotated. Article II Section 1 Clause 5 – Qualifications for the Presidency
Sponsoring Family Members
The gap between the two statuses is enormous when it comes to bringing family to the United States. Citizens can petition for immediate relatives, meaning spouses, unmarried children under 21, and parents, with no annual cap on visas.8U.S. Department of State. Family Immigration That uncapped status matters, because these petitions move through the system far faster than capped categories where backlogs stretch for years.
Citizens can also sponsor married adult children, unmarried adult children, and siblings, though those categories fall under the preference system with annual limits and long waits.9U.S. Citizenship and Immigration Services. Green Card for Family Preference Immigrants The sibling category can involve waits exceeding 20 years for applicants from high-demand countries.
Green card holders can only sponsor spouses and unmarried children. They cannot petition for parents, married children, or siblings at all.9U.S. Citizenship and Immigration Services. Green Card for Family Preference Immigrants And because their family petitions fall under capped preference categories rather than the unlimited immediate-relative category, even spousal petitions face longer processing times than those filed by citizens. For permanent residents with parents or siblings abroad, naturalizing is the only way to open those sponsorship doors.
Travel and Time Abroad
Citizens travel on a U.S. passport and can stay abroad as long as they want with no immigration consequence. Live overseas for a decade and you can walk back through a U.S. port of entry without being questioned about whether you still live here.
Green card holders operate under a different set of rules. A permanent resident who leaves the United States for more than 180 continuous days is treated by immigration law as someone seeking a new admission rather than simply returning home.10Office of the Law Revision Counsel. 8 U.S.C. 1101 – Definitions That triggers a fresh look at admissibility, including whether the person may have abandoned their residence.
If the absence exceeds one year, the green card itself is no longer valid for reentry.11eCFR. 8 CFR 211.1 – Documentary Requirements for Immigrants Even with a reentry permit, an officer at the border can still question whether you’ve maintained genuine ties to the United States. Green card holders also continue to travel on the passport of their home country and remain subject to that country’s visa agreements with other nations. The green card gets you back into the U.S.; it does not function like an American passport for travel elsewhere.
Federal Jobs and Security Clearances
Both statuses can work for any private employer in the United States without a separate work visa. In the private sector, the two are functionally identical for employment purposes.
Federal government jobs are a different story. Under an executive order, only citizens and nationals may compete for positions in the competitive civil service.12USAJOBS. Employment of Non-Citizens Agencies can hire non-citizens when no qualified citizen is available, but those hires receive excepted appointments and cannot be promoted into the competitive service. Positions requiring security clearances, common in defense, intelligence, and law enforcement, almost always require citizenship as well.
Federal Benefits and the Five-Year Wait
Citizens qualify for federal means-tested benefits, meaning programs like Supplemental Security Income (SSI), Medicaid, and SNAP, whenever they meet the program’s income and eligibility rules. Green card holders face an additional hurdle: a five-year bar that blocks access to most federal means-tested benefits for the first five years after obtaining qualified immigration status.13Office of the Law Revision Counsel. 8 U.S.C. 1613 – Five-Year Limited Eligibility of Qualified Aliens for Federal Means-Tested Public Benefit
After that period, green card holders can access these programs on roughly the same terms as citizens, though some programs still impose additional residency-duration requirements. Refugees and people granted asylum are exempt from the five-year bar for certain programs, but most green card holders are not.
Where the Two Statuses Match
Tax obligations are one area where green card holders and citizens are on identical footing. Both must file U.S. income tax returns and report worldwide income, meaning income earned in any country, not just the United States.14Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad This obligation continues even if you live and work entirely overseas, and it applies until a green card holder formally surrenders their status or a citizen renounces.
Both groups must also report foreign financial accounts. If the combined value of your foreign bank and financial accounts exceeds $10,000 at any point during the year, you must file a Report of Foreign Bank and Financial Accounts (FBAR) with FinCEN.15FinCEN. Report Foreign Bank and Financial Accounts The penalties for failing to file are steep, and the requirement catches many green card holders off guard, especially those who kept bank accounts at home before immigrating.
Selective Service is the other place the two statuses converge. Male green card holders between 18 and 26 must register, just as male citizens in that age range must.16Office of the Law Revision Counsel. 50 U.S.C. 3802 – Registration Registration is a prerequisite for many government benefits and, importantly, for naturalization. A man who failed to register before turning 26 can face a permanent bar from becoming a citizen unless he can show the failure was not knowing and willful.
Closing the Gap Through Naturalization
Naturalization is the bridge between the two statuses. The general requirements focus on time, conduct, and knowledge.
Most applicants must have held a green card and lived continuously in the United States for at least five years before filing. During that time, they must have been physically present in the country for at least half of the required period.17Office of the Law Revision Counsel. 8 U.S.C. 1427 – Requirements of Naturalization An absence of more than six months can break continuity of residence and reset the clock. If you’re married to a U.S. citizen and living with your spouse, the continuous-residence requirement drops to three years, and you must have been in marital union with that citizen spouse throughout.18Office of the Law Revision Counsel. 8 U.S.C. 1430 – Married Persons and Employees of Certain Nonprofit Organizations
USCIS evaluates good moral character during the statutory period. A conviction for an aggravated felony on or after November 29, 1990, creates a permanent bar with no way around it.2U.S. Citizenship and Immigration Services. Permanent Bars to Good Moral Character Other issues that can derail an application include failure to file taxes, failure to register for Selective Service, and certain criminal convictions that carry temporary bars.
Every applicant must pass an English language test covering reading, writing, speaking, and comprehension, along with a civics test on U.S. history and government. For applications filed on or after October 20, 2025, the civics test draws from a bank of 128 questions, and applicants must answer at least 12 out of 20 correctly.19U.S. Citizenship and Immigration Services. Chapter 2 – English and Civics Testing Older, long-time residents may qualify for exemptions from the English portion or accommodations on the civics test.20U.S. Citizenship and Immigration Services. Exceptions and Accommodations
The process starts with Form N-400, filed online or by mail with USCIS.21U.S. Citizenship and Immigration Services. N-400, Application for Naturalization The filing fee is $710 for online submissions and $760 on paper. Applicants with household incomes at or below 150% of the federal poverty guidelines may qualify for a reduced fee of $380. The application demands detailed disclosure of your residential history, employment, travel, and any interactions with law enforcement. Accuracy matters, because misstatements can be treated as fraud and jeopardize both the application and the existing green card behind it.