; (2) in subsection (d), by striking of such court and all that follows through Supreme Court. and inserting: of such court, except that any designation or assignment made to the Supreme Court shall be in accordance with subsection (e). ; (3) by redesignating subsection (e) as subsection (g); and (4) by inserting after subsection (d) the following: (e) (1) When there is a vacancy on the Supreme Court due to the death, disability certification under section 372, or removal of a Justice, the retired Chief Justice of the United States or Associate Justice of the Supreme Court who has most recently become a Senior Justice shall be designated and assigned to serve as a Justice until an appointment is made under section 7 of this title. (2) If there is more than one vacancy on the Supreme Court, the Senior Justice who has served in such capacity for the least amount of time shall be designated and assigned to serve as a Justice by the Chief Justice until each vacancy on the Supreme Court is filled. (f) Any Chief Justice of the United States or Associate Justice of the Supreme Court who has retired from regular active service under section 372 may not be a Senior Justice. . 4. Exception to appointment of a successor (a) Retired justices Section 371 of title 28, United States Code, is amended— (1) in subsection (d)— (A) by striking justice or ; and (B) by inserting before the period at the end the following: or designate a Senior Justice in accordance with section 294(e) to fill a vacancy resulting from the retirement of a justice under this section