(a) In general
Any person, including the Fund, who pays compensation pursuant to this Act to any claimant for removal costs or damages shall be subrogated to all rights, claims, and causes of action that the claimant has under any other law.

(b) Interim damages

(1) In general
If a responsible party, a guarantor, or the Fund has made payment to a claimant for interim, short-term damages representing less than the full amount of damages to which the claimant ultimately may be entitled, subrogation under subsection (a) shall apply only with respect to the portion of the claim reflected in the paid interim claim.

(2) Final damages
Payment of such a claim shall not foreclose a claimant's right to recovery of all damages to which the claimant otherwise is entitled under this Act or under any other law.

(c) Actions on behalf of Fund
At the request of the Secretary, the Attorney General shall commence an action on behalf of the Fund to recover any compensation paid by the Fund to any claimant pursuant to this Act, and all costs incurred by the Fund by reason of the claim, including interest (including prejudgment interest), administrative and adjudicative costs, and attorney's fees. Such an action may be commenced against any responsible party or (subject to section 2716 of this title) guarantor, or against any other person who is liable, pursuant to any law, to the compensated claimant or to the Fund, for the cost or damages for which the compensation was paid. Such an action shall be commenced against the responsible foreign government or other responsible party to recover any removal costs or damages paid from the Fund as the result of the discharge, or substantial threat of discharge, of oil from a foreign offshore unit or other facility located seaward of the exclusive economic zone.

(d) Authority to settle
The head of any department or agency responsible for recovering amounts for which a person is liable under this subchapter may consider, compromise, and settle a claim for such amounts, including such costs paid from the Fund, if the claim has not been referred to the Attorney General. In any case in which the total amount to be recovered may exceed $500,000 (excluding interest), a claim may be compromised and settled under the preceding sentence only with the prior written approval of the Attorney General.