; such compensatory time off for travel may be applied towards such debt only after other forms of overtime or earned compensatory time credited to the border patrol agent have been exhausted. ; (5) by amending subsection (d) to read as follows: (d) Treatment as basic pay (1) In general Any overtime supplement in addition to the basic border patrol rate of pay for a border patrol agent resulting from application of the level 1 border patrol rate of pay or the level 2 border patrol rate of pay shall be treated as part of basic pay only— (A) except as otherwise provided in paragraph (3), for purposes of the definitions in section 8331(3) and 8401(4) and the provisions in chapters 83 and 84 that rely on those definitions (consistent with section 8331(3)(I)); (B) except as otherwise provided in paragraph (3), for purposes of sections 5595(c) and 8704(c); (C) for the purpose of section 8114(e); and (D) subject to paragraph (2) and any limitation established under paragraph (3), any other purpose that the Director of the Office of Personnel Management may by regulation prescribe. (2) Exclusions The overtime supplement described in paragraph (1) shall not be treated as part of basic pay for purposes not covered by that paragraph, including the purposes of calculating— (A) overtime pay, night pay, Sunday pay, or holiday pay under section 5542, 5545, or 5546; (B) locality-based comparability payments under section 5304 or special rate supplements under section 5305