In general— Notwithstanding
section 7421 of title 38, United States Code, or any other provision of law, an employee of the Department of Veterans Affairs (including an employee who is appointed in the Veterans Health Administration under any provision of chapter 74 of such title on a full-time basis in a position listed in section 7421(b) of such title) shall be entitled to four administrative weeks of leave without pay during any 12-month period due
to—