; and (3) recommendations of the Federal agency on additional authority for the Federal agency, if any, that would be helpful for such Federal agency, in combination with the other Federal agencies, to achieve the national goal declared by section 2. (e) Technical assistance The Administrator, in consultation with the Secretary as appropriate, shall provide technical assistance upon request by any Federal agency in developing or revising a plan under this section. (f) Implementation Beginning not later than 15 months after the date of enactment of this Act, the head of each Federal agency shall implement the plan of the Federal agency developed under subsection (a) and submitted to Congress under subsection (d). (g) Revisions Not less frequently than every 24 months after the head of a Federal agency submits to Congress the Federal agency’s plan under subsection (d), the head of such Federal agency, in consultation with the Administrator, shall review and revise the plan to ensure it is sufficient to achieve, in combination with the plans of the other Federal agencies, the national goal declared by section 2. The head of each Federal agency shall include the conclusion of each such review and any revised plan resulting from such review in the next annual report required under subsection (h). (h) Annual report Not later than March 31 of the calendar year after the calendar year in which each Federal agency is required to submit to Congress a plan under subsection (d), and not later than March 31 of each year thereafter, the head of each Federal agency shall issue a public report on the plan of such Federal agency (including any revisions to such plan), actions taken by the Federal agency pursuant to such plan, and the effects of such actions, during the preceding calendar year. 5. Accountability (a) EPA review and reports The Administrator shall— (1) monitor the overall progress of the United States in reducing greenhouse gas emissions and toward achieving the national goal declared by section 2