after stating, the case, delivered the-opinion of the court.
After this case had been submitted to us on certain alleged errors, we became impressed with the fact that a more serious; question existed than any that had been discussed, and that is, whether a preliminary examination before a commissioner-is a proceeding “ in any court of the United States ” within the meaning of section 5406. The attention of counsel was-called to this, and briefs have been furnished on each side.. "With the assistance furnished by these briefs we have carefully examined the question, and are of the opinion that it must be-answered in the negative.
It is axiomatic that statutes creating and defining crimes-cannot be extended by intendment, and that no act, however wrongful, can be punished under such a statute unless clearly within its terms.
“
There can be no constructive offences, and before a man can be punished, his case must be plainly and unmistakably within the statute.”
United States
v.
Lacher,.
That a commissioner is not a judge of a court of the United States within the constitutional sense is apparent and conceded. He is simply an officer of the Circuit Court, appointed and removable by that - court. Rev. Stat. § 627.
Ex parte Hennen,
. Doubtless it was within the power of Congress to legislate in this direction fully for the protection of every witness called upon by the laws of the United States to give testi
*284
mony in any place and under any circumstances,
Logan
v.
United States,
Further discussion seems unnecessaiy. As a preliminary examination before a commissioner cannot be considered a case pending in any court of the United States, it follows that this indictment is fatally defective and charges no offence against the laws of the United States.
The judgment is
Reversed.
