the Federal Hospital Insurance Trust Fund or the Federal Supplementary Medical Insurance Trust Fund. (B) Payments under the Medicare program under title XVIII of the Social Security Act ( 42 U.S.C. 1395 et seq. ). (2) Tier II obligations The term Tier II obligations means payments necessary to provide any of the following: (A) Any obligation of the Department of Defense. (B) Benefits under laws administered by the Secretary of Veterans Affairs. (3) Tier III obligations The term Tier III obligations means any obligation of the United States which is not a Tier I, Tier II, Tier IV, or Tier V obligation. (4) Tier IV obligations The term Tier IV obligations means any payment which constitutes any of the following: (A) Compensation for any Federal employee for official time under section 7131 of such title 5, United States Code. (B) Any payment for travel expenses for any officer or employee of the Executive branch of Government, including the President and Vice President, unless such payment is a Tier I or Tier II obligation. (C) Compensation of any officer or employee of the Executive branch of Government (other than an individual in the competitive service, as defined in section 2102 of title 5, United States Code), including the President and Vice President, unless such compensation is a Tier I or Tier II obligation. (5) Tier V obligations The term Tier V obligations means compensation of any Member of Congress (as that term is defined in section 2106 of title 5, United States Code). (c) Coordination with public debt limit Obligations issued under subsection (a)(2) shall not be taken into account as subject to the limitation imposed under section 3101(b) of title 31, United States Code. The preceding sentence shall not apply with respect to any obligation after the first date (after the issuance of such obligation) on which any modification or suspension of such limitation takes effect. (d) Weekly reports The written report referred to in subsection (a)(6) shall include, with respect to the period covered by such