• § 1421. Naturalization authority

• § 1422. Eligibility for naturalization

• § 1423. Requirements as to understanding the English language, history, principles and form of government of the United States

• § 1424. Prohibition upon the naturalization of persons opposed to government or law, or who favor totalitarian forms of government

• § 1425. Ineligibility to naturalization of deserters from the Armed Forces

• § 1426. Citizenship denied alien relieved of service in Armed Forces because of alienage

• § 1427. Requirements of naturalization

• § 1428. Temporary absence of persons performing religious duties

• § 1429. Prerequisite to naturalization; burden of proof

• § 1430. Married persons and employees of certain nonprofit organizations

• § 1431. Children born outside the United States and lawfully admitted for permanent residence; conditions under which citizenship automatically acquired

• § 1432. Repealed.

• § 1433. Children born and residing outside the United States; conditions for acquiring certificate of citizenship

• § 1434. Repealed.

• § 1435. Former citizens regaining citizenship

• § 1436. Nationals but not citizens; residence within outlying possessions

• § 1437. Resident Philippine citizens excepted from certain requirements

• § 1438. Former citizens losing citizenship by entering armed forces of foreign countries during World War II

• § 1439. Naturalization through service in the armed forces

• § 1440. Naturalization through active-duty service in the Armed Forces during World War I, World War II, Korean hostilities, Vietnam hostilities, or other periods of military hostilities

• § 1440-1. Posthumous citizenship through death while on active-duty service in armed forces during World War I, World War II, the Korean hostilities, the Vietnam hostilities, or in other periods of military hostilities

• §§ 1440a to 1440d. Omitted

• § 1440e. Exemption from naturalization fees for aliens naturalized through service during Vietnam hostilities or other subsequent period of military hostilities; report by clerks of courts to Attorney General

• § 1440f. Fingerprints and other biometric information for members of the United States Armed Forces

• § 1440g. Provision of information on military naturalization

• § 1441. Constructive residence through service on certain United States vessels

• § 1442. Alien enemies

• § 1443. Administration

• § 1443a. Naturalization proceedings overseas for members of the Armed Forces and their spouses and children

• § 1444. Photographs; number

• § 1445. Application for naturalization; declaration of intention

• § 1446. Investigation of applicants; examination of applications

• § 1447. Hearings on denials of applications for naturalization

• § 1448. Oath of renunciation and allegiance

• § 1448a. Address to newly naturalized citizens

• § 1449. Certificate of naturalization; contents

• § 1450. Functions and duties of clerks and records of declarations of intention and applications for naturalization

• § 1451. Revocation of naturalization

• § 1452. Certificates of citizenship or U.S. non-citizen national status; procedure

• § 1453. Cancellation of certificates issued by Attorney General, the Commissioner or a Deputy Commissioner; action not to affect citizenship status

• § 1454. Documents and copies issued by Attorney General

• § 1455. Fiscal provisions

• § 1456. Repealed.

• § 1457. Publication and distribution of citizenship textbooks; use of naturalization fees

• § 1458. Compilation of naturalization statistics and payment for equipment

• § 1459. Repealed.