28 C.F.R. § 0.20 General functions.
The following-described matters are assigned to, and shall be conducted, handled, or supervised by, the Solicitor General, in consultation with each agency or official concerned:
(a) Conducting, or assigning and supervising, all Supreme Court cases, including appeals, petitions for and in opposition to certiorari, briefs and arguments, and, in accordance with § 0.163, settlement thereof.
(b) Determining whether, and to what extent, appeals will be taken by the Government to all appellate courts (including petitions for rehearing en banc and petitions to such courts for the issuance of extraordinary writs) and, in accordance with § 0.163, advising on the approval of settlements of cases in which he had determined that an appeal would be taken.
(c) Determining whether a brief amicus curiae will be filed by the Government, or whether the Government will intervene, in any appellate court.
(d) Assisting the Attorney General, the Deputy Attorney General and the Associate Attorney General in the development of broad Department program policy.