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:
UNITED STATES of America, Appellee, v. Cubit Milton DIGGS, Appellant.
No. 13767.
United States Court of Appeals, Fourth Circuit.
April 1, 1970.
R. Gordon Scott (court-appointed counsel) on brief for appellant.
Brian P. Gettings, U. S. Atty., and Roger T. Williams, Asst. U. S. Atty., on brief for appellee.
Before HAYNSWORTH, Chief Judge, and SOBELOFF and BOREMAN, Circuit Judges.
PER CURIAM.
Convicted of uttering a United States Treasurer’s check with knowledge that the endorsement thereon was forged (18 U.S.C. § 495) and unlawful possession of such check with knowledge that it was stolen (18 U.S.C. § 1708), appellant presents as his sole assignment of error the allegedly improper introduction into evidence of a regiscope photograph showing him with the check at the time of cashing it.
Appellant does not contend that the photograph is not an accurate representation of the scene it depicts or that the check shown in the photograph was not the same check that he was charged with uttering; he urges that an insufficient predicate was laid for its introduction because the witness who testified concerning the transaction could not positively identify the photograph as having been made in his store due to the blurring of some digits of the regiscope number stamped on the check prior to its being photographed. This contention is without merit, as the witness was able to so identify the check by reference to other features, most particularly the presence of his store stamp on the reverse side placed there when the check was deposited in the bank. On consideration of the entire record we find no error and have concluded that the appeal is appropriate for summary disposition.
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