Under the present ruling of the state court, Shipman’s challenge to the old statute and administrative procedure is mooted. We therefore remand this case to the district court with directions to retain jurisdiction until such time as the Missouri Court of Appeals passes on the writ of prohibition. If the writ is denied and Shipman’s case is remanded to the Division of Family Services to be processed under the amended statute, the federal district court should dismiss the case as moot. If, however, the writ of prohibition is sustained and Shipman is required to process his administrative review in the Missouri state court under the old statute, the district court is requested to review Shipman’s claim as to whether the administrative review in the state court under the old statute is insufficient to justify abstention under Middlesex [County Ethics Committee v. Garden State Bar Ass’n, 457 U.S. 423, 102 S.Ct. 2515, 73 L.Ed.2d 116 (1982)]. Under such circumstances, the district court is to either enter a new judgment on the grounds of abstention or to try plaintiff’s claim under section 1983.
Shipman v. Missouri Department of Family Services, slip op. at 3-4 (8th Cir. Nov. 8, 1985) [782 F.2d 1048 (table) ]. Once the writ of prohibition was denied, the district court had no choice but to follow the mandate and dismiss all claims previously raised.
When a case has been decided by this court on appeal and remanded to the District Court, every question which was before this court and disposed of by its decree is finally settled and determined. The District Court is bound by the decree and must carry it into execution according to the mandate. It cannot alter it, examine it except for purposes of execution, or give any further relief or review it for apparent error with respect to any question decided on appeal.
Houghton v. McDonnell Douglas Corp., 627 F.2d 858, 864-65 (8th Cir.1980), citing Thornton v. Carter, 109 F.2d 316, 319-20 (8th Cir.1940).
The district court properly followed the mandate of this Court by dismissing as moot all of Shipman’s claims involving the 1982 enactments.
Standing
Shipman argues that the district court erred in granting summary judgment to appellees on his claims based upon the 1984 enactments and the DFS’s alleged practices subsequent to these enactments. He argues that he may be subject to a future action by appellees to recover state debt for AFDC payments made to Maudie Shipman after 1984. The district court properly held that Shipman lacked standing to challenge the 1984 enactments.
In order to establish standing, a plaintiff must show that he or she has suffered some actual or threatened injury as a result of the putatively illegal conduct of the defendant and that the injury is likely to be redressed by a favorable decision. Heckler v. Mathews, 465 U.S. 728, 738, 104 S.Ct. 1387, 1394, 79 L.Ed.2d 646 (1984). The injury may not be merely “ ‘conjectural’ or ‘hypothetical,’ ” City of Los Angeles v. Lyons, 461 U.S. 95, 102, 103 S.Ct. 1660, 1665, 75 L.Ed.2d 675 (1983) (citations omitted), and the injury alleged must be fairly traceable to the challenged action. Allen v. Wright, 468 U.S. 737, 751, 104 S.Ct. 3315, 3324, 82 L.Ed.2d 556 (1984).
In the present action, Shipman alleges no real or threatened injuries as a result of the 1984 enactments. Appellees have not initiated any proceedings against Shipman under the 1984 enactments. Such proceedings are now merely conjectural. Therefore, the district court properly concluded that Shipman lacks standing to challenge the 1984 enactments.
Class Certification
Shipman argues that the district court erred in dismissing his case without ruling on his motion for class certification. Shipman relies on United States Parole Commission v. Geraghty, 445 U.S. 388, 401-02, 100 S.Ct. 1202, 1211, 63 L.Ed.2d 479 (1980), (citations omitted) (Geraghty).
Nor does a confession of judgment by defendants on less than all the issues moot an entire case; other issues in the case may be appealable. We can assume