Subject to subsections (b), (c), and (d) of this section, new budget authority and unobligated balances for any programs, projects, or activities within major functional category 050 (other than a military personnel account) may be further reduced beyond the amount specified in an order issued by the President under section
of this title for such fiscal year. To the extent such additional reductions are made and result in additional outlay reductions, the President may provide for lesser reductions in new budget authority and unobligated balances for other programs, projects, or activities within major functional category 050 for such fiscal year, but only to the extent that the resulting outlay increases do not exceed the additional outlay reductions, and no such program, project, or activity may be increased above the level actually made available by law in appropriation Acts (before taking sequestration into account). In making calculations under this subsection, the President shall use account outlay rates that are identical to those used in the report by the Director of OMB under section
of this title.