; and (B) 50 percent shall be made available to pay claims of eligible persons described in section 204(c)(2)(B). (2) Claims exceeding appropriated amounts If the claims of eligible persons described in section 204(c)(2)(A) or of eligible persons described in section 204(c)(2)(B) exceed the amounts appropriated to pay those respective claims under paragraph (1), any claim of an eligible person within that respective category shall be reduced on a pro rata basis. (3) Date of distribution For the purpose of reducing claims under paragraph (2), the Special Master shall determine a date on which all claims of eligible persons shall be paid. (d) Unobligated funds Any amounts made available under subsection (b) that are not obligated by the Special Master as of the date that is 36 months after the date of enactment of this Act shall be returned to the Treasury of the United States. 206. Regulations (a) In general The Special Master shall promulgate regulations, through notice and comment rulemaking in compliance with section 553 of title 5, United States Code, to carry out this title. (b) Notice of proposed rulemaking Not later than 60 days after the date on which the Special Master is appointed under section 203(a), the Special Master shall publish a notice of proposed rulemaking in the Federal Register. (c) Final rule Not later than 60 days after the date on which the notice of proposed rulemaking described in subsection (b) is published, the Special Master shall promulgate final regulations to carry out this title. (d) Vacancy in the position of Special Master If promulgation of regulations under this section is completed before the date on which a Special Master is appointed under section 203(a)(3)(A), that Special Master is not required to promulgate new regulations under this section. 207. Sunset The provisions of this title shall be effective for the period beginning on the date of enactment of this Act and ending on the date that is 36 months after the date of enactment of this Act. III Puerto Rico Public