ERROR TO THE DISTRICT COURT OF THE UNITED STATES FOR THE DISTRICT OF OREGON. No. 598. Argued January 7, 1915. Decided February 23, 1915. A charge of crime against the United States must have clear legislative basis. A charge of perjury may be based on § 125, Criminal Code, for knowingly swearing falsely to an affidavit required either expressly by Act of Congress or by an authorized regulation of the Land Department. When by valid regulation the Land Department requires an affidavit to be made before