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 "criminal - federal offense".

Opinion:
Walter B. STEWART, Appellant, v. UNITED STATES of America, Appellee.
No. 20961.
United States Court of Appeals Fifth Circuit.
Nov. 20, 1964.
R. W. Thompson, Jr., Webb M. Mize, Hollis C. Thompson, Jr., Gulfport, Miss., for appellant.
Robert E. Hauberg, U. S. Atty., E. Donald Strange, Asst. U. S. Atty., Jackson, Miss., for appellee.
Before TUTTLE, Chief Judge, and JONES and ANDERSON, Circuit Judges.
Of the Second Circuit, sitting by designation.
PER CURIAM.
The appellant, who was vice president of the Hancock Bank at Gulfport, Mississippi, was found guilty by a jury on counts four and five of a five count indictment. He was charged in each of counts four and five with willfully misapplying certain funds intrusted to him as an officer of the bank, in violation of § 656, Title 18 of the United States Code. He has appealed from his convictions on these counts and the sentences imposed, on the ground that the evidence was insufficient to support a verdict of guilty on either of the counts and because the court made certain errors in its charge to the jury. An examination of the transcript of the trial proceedings shows, however, that there was ample evidence on the basis of which the jury was warranted in finding that the accused was, beyond a reasonable doubt, guilty on both of the counts in question. The errors asserted with respect to the court’s instructions to the jury are without merit.
Affirmed.

Question: What is the specific issue in the case within the general category of "criminal - federal offense"?

Choices:
murder
rape
arson
aggravated assault
robbery
burglary
auto theft
larceny (over $50)
other violent crimes
narcotics
alcohol related crimes, prohibition
tax fraud
firearm violations
morals charges (e.g., gambling, prostitution, obscenity)
criminal violations of government regulations of business
other white collar crime (involving no force or threat of force; e.g., embezzlement, computer fraud,bribery)
other crimes
federal offense, but specific crime not ascertained

Answer: 15