8 CFR § 316.2 - Eligibility.
(a) General. Except as otherwise provided in this chapter, to be eligible for naturalization, an alien must establish that he or she:
(1) Is at least 18 years of age;
(2) Has been lawfully admitted as a permanent resident of the United States;
(5) Immediately preceding the filing of an application, or immediately preceding the examination on the application if the application was filed early pursuant to section 334(a) of the Act and the three month period falls within the required period of residence under section 316(a) or 319(a) of the Act, has resided, as defined under § 316.5, for at least three months in a State or Service district having jurisdiction over the applicant's actual place of residence;
(7) For all relevant time periods under this paragraph, has been and continues to be a person of good moral character, attached to the principles of the Constitution of the United States, and favorably disposed toward the good order and happiness of the United States; and
(8) Is not a person described in Section 314 of the Act relating to deserters of the United States Armed Forces or those persons who departed from the United States to evade military service in the United States Armed Forces.
(b) Burden of proof. The applicant shall bear the burden of establishing by a preponderance of the evidence that he or she meets all of the requirements for naturalization, including that the applicant was lawfully admitted as a permanent resident to the United States, in accordance with the immigration laws in effect at the time of the applicant's initial entry or any subsequent reentry.