What follows is an opinion from a United States Court of Appeals.
Your task is to identify the issue in the case, that is, the social and/or political context of the litigation in which more purely legal issues are argued. Put somewhat differently, this field identifies the nature of the conflict between the litigants. The focus here is on the subject matter of the controversy rather than its legal basis.
Your task is to determine the specific issue in the case within the broad category of "civil rights".

Opinion:
KRONBERG v. HALE et al.
No. 12292.
United States Court of Appeals Ninth Circuit.
Feb. 27, 1950.
Writ of Certiorari Denied May 29, 1950.
See 70 S.Ct. 987.
William Farnum White, San Francisco, Cal., for appellant.
Frank J. Hennessy, U. S. Atty., and Joseph Karesh, Asst. U. S. Atty., San Francisco, Cal., for appellees.
Before HEALY, McALLISTER and ORR, Circuit Judges.
PER CURIAM.
Appellant has filed a petition denominated “petition for rehearing by the court in banc (and if denied) petition for the court to certify constitutional question to U. S. Supreme Court for decision.”
The petition is stricken as being without authority in law or in the rules or practice of the court.

Question: What is the specific issue in the case within the general category of "civil rights"?

Choices:
civil rights claims by prisoners and those accused of crimes
voting rights, race discrimination, sex discrimination
other civil rights

Answer: 0