; and (2) have no negative impact on the Federal Hospital Insurance Trust Fund or the Federal Supplementary Medical Insurance Trust Fund (including the Medicare Prescription Drug Account within such Trust Fund). (b) Option (1) In general Every individual who meets the requirements described in paragraph (3) shall be eligible to enroll under this section. (2) Part A, B, and D benefits An individual enrolled under this section is entitled to the same benefits (and shall receive the same protections) under this title as an individual who is entitled to benefits under part A and enrolled under parts B and D, including the ability to enroll in a private plan that provides qualified prescription drug coverage. (3) Requirements for eligibility The requirements described in this paragraph are the following: (A) The individual is a resident of the United States. (B) The individual is— (i) a citizen or national of the United States; or (ii) an alien lawfully admitted for permanent residence. (C) The individual is not otherwise entitled to benefits under part A or eligible to enroll under part A or part B. (D) The individual has attained the applicable years of age but has not attained 65 years of age. (4) Applicable years of age defined For purposes of this section, the term applicable years of age means— (A) effective January 1 of the first year following the date of enactment of the Medicare for All Act , the age of 55; (B) effective January 1 of the second year following such date of enactment, the age of 45; and (C) effective January 1 of the third year following such date of enactment, the age of 35. (c) Enrollment