the warrant and that there is probable cause for believing the existence of the grounds on which the warrant was issued, then the judge or commissioner shall order the same retained in the custody of the person seizing it or to be otherwise disposed of according to law.
Sec. 17. Final disposition.The judge or commissioner must annex the affidavits, search warrant, return, inventory, and evidence, and if he has not power to inquire into the offense in respect to which the warrant was issued he must at once file the same, together with a copy of the record of his proceedings, with the clerk of the court having power to so inquire.
Sec. 18. Punishment for obstructing, etc., service.Whoever shall knowingly and willfully obstruct, resist, or oppose any such officer or person in serving or attempting to serve or execute any such search warrant, or shall assault, beat, or wound any such officer or person, knowing him to be an officer or person so authorized, shall be fined not more than $1,000 or imprisoned not more than two years.
Sec. 19. Punishment for perjury.
Vol. 35, p. 1111.Sections one hundred and twenty-five and one hundred and twenty-six of the Criminal Code of the United States shall apply to and embrace all persons making oath or affirmation or procuring the same under the provisions of this title, and such persons shall be subject to all the pains and penalties of said sections.
Sec. 20. Punishment for maliciously procuring warrant.A person who maliciously and without probable cause procures a search warrant to be issued and execute shall be fined not more than $1,000 or imprisoned not more than one year.
Sec. 21. Punishment for exceeding authority, etc., in executing.An officer who in executing a search warrant willfully exceeds his authority, or exercises it with unnecessary severity, shall be fined not more than $1,000 or imprisoned not more than one year.
Sec. 22. Punishment for illegally possessing papers, etc., in aid of foreign Government.Whoever, in, aid of any foreign Government, shall knowingly and willfully have possession of or control over any property or papers designed or intended for use or which is used as the means of violating any penal statute, or any of the rights or obligations of the United States under any treaty or the law of nations, shall be fined not more than $1,000 or imprisoned not more than two years, or both.
Sec. 23. Existing laws not impaired.Nothing contained in this title shall be held to repeal or impair any existing provisions of law regulating search and the issue of search warrants.
TITLE XII.
Use of mails.USE OF MAILS.
Section 1. Matter violating provisions of this Act nonmailable.
Post, p. 426.Every letter, writing, circular, postal card, picture, print, engraving, photograph, newspaper, pamphlet, book, or other publication, matter, or thinh, of any kind, in violation of any of the provisions of this Act is hereby declared to be nonmailable matter and shall not be conveyed in the mails or delivered from any post office or by any letter carrier: Proviso.
Authority to open letters restricted.Provided, That nothing in this Act shall be so construed as to authorize any person other than an employe of the Dead Letter Office, duly authorized thereto, or other person upon a search warrant authorized by law, to open any letter not addressed to himself.
Sec. 2. Letters, etc., advocating treason, resistance to the law, etc., nonmailable.Every letter, writing, circular, postal card, picture, print, engraving, photograph, newspaper, pamphlet, book, or other publication, matter or thing, of any kind, containing any matter advocating or urging treason, insurrection, or forcible resistance to any law of the United States, is hereby declared to be nonmailable.
Sec. 3. Punishment for violations.Whoever shall use or attempt to use the mails or Postal Service of the United States for the transmission of any matter de-
