opinion: Per Curiam.
  In this appeal from a judgment of the Supreme Court of California, appellants challenge the constitutionality of the promulgation by appellee of certain rate tariffs applicable to dump truck carriers operating in California. They contend essentially that the tariffs violate their rights to due process and equal protection guaranteed by the Fourteenth Amendment because appellee issued them on the basis of findings unsupported by any evidence in the record. We have been informed by the parties that subsequent to the filing of the jurisdictional statement with this Court appellee reopened its proceedings at appellants’ request and is conducting additional evidentiary hearings concerning the contested regulations. These hearings may remove the basis for, or significantly alter the nature of, appellants’ constitutional attack. Consequently, we dismiss the appeal without prejudice to appellants’ raising of any appropriate federal claims following the completion of the additional proceedings. See Boston & M. R. Co. v. United States, 358 U. S. 68 (1958).
  So ordered.
instruction: What follows is an opinion from the Supreme Court of the United States. Your task is to identify whether administrative action occurred in the context of the case prior to the onset of litigation. The activity may involve an administrative official as well as that of an agency. To determine whether administration action occurred in the context of the case, consider the material which appears in the summary of the case preceding the Court's opinion and, if necessary, those portions of the prevailing opinion headed by a I or II. Action by an agency official is considered to be administrative action except when such an official acts to enforce criminal law. If an agency or agency official "denies" a "request" that action be taken, such denials are considered agency action. Exclude: a "challenge" to an unapplied agency rule, regulation, etc.; a request for an injunction or a declaratory judgment against agency action which, though anticipated, has not yet occurred; a mere request for an agency to take action when there is no evidence that the agency did so; agency or official action to enforce criminal law; the hiring and firing of political appointees or the procedures whereby public officials are appointed to office; attorney general preclearance actions pertaining to voting; filing fees or nominating petitions required for access to the ballot; actions of courts martial; land condemnation suits and quiet title actions instituted in a court; and federally funded private nonprofit organizations.