to be paid has been reduced on the basis of insufficient funding, the Secretary shall, in the first fiscal year beginning after sufficient funding becomes available, pay to the eligible claimant the unpaid amount plus 6 percent interest per annum on such unpaid amount. (B) Definitions In this paragraph: (i) Insufficient funding The term insufficient funding means funding that the Secretary determines is insufficient for purposes of compensating all claims under the Program. (ii) Sufficient funding The term sufficient funding means funding that the Secretary determines is sufficient for purposes of compensating all claims under the Program. (iii) Unpaid amount The term unpaid amount means the amount of additional compensation the eligible claimant would have been paid under the Program if sufficient funding had been available. (4) Decedents’ creditors Compensation paid under the Program is not subject to a claim of a creditor of any deceased firefighter with respect to whom such compensation was paid. (c) Attorneys’ fees (1) Maximum percentage Notwithstanding any contract, attorneys’ fees for services rendered in obtaining compensation under the Program (including an appeal under section 3401(g)) may not exceed the highest percentage permitted under section 2678 of title 28, United States Code. (2) Penalties Any attorney who charges, demands, receives, or collects for services rendered in connection with obtaining compensation under the Program any amount in excess of that allowed under this subsection, if recovery be had, shall be subject to the penalties provided in such section 2678. 3403. Regulations Not later than 90 days after the date of enactment of this title, the Secretary shall promulgate regulations to carry out this title, including regulations with respect to— (1) the claim form developed by the Secretary under section 3401(b)(2)