Code § 2071 - Concealment, removal, or mutilation generally – “Concealment, removal, or mutilation generally – (a) Whoever willfully and unlawfully conceals, removes, mutilates, obliterates, or destroys, or attempts to do so, or, with intent to do so takes and carries away any record, proceeding, map, book, paper, document, or other thing, filed or deposited with any clerk or officer of any court of the United States, or in any public office, or with any judicial or public officer of the United States, shall be fined under this title or imprisoned not more than three years, or both. (b) Whoever, having the custody of any such record, proceeding, map, book, document, paper, or other thing, willfully and unlawfully conceals, removes, mutilates, obliterates, falsifies, or destroys the same, shall be fined under this title or imprisoned not more than three years, or both; and shall forfeit his office and be disqualified from holding any office under the United States. As used in this subsection, the term “office” does not include the office held by any person as a retired officer of the Armed Forces of the United States.” 18 U.S. Code § 1512 - Tampering with a witness, victim, or an informant (a)(1) Whoever kills or attempts to kill another person, with intent to—(A) prevent the attendance or testimony of any person in an official proceeding;(B) prevent the production of a record, document, or other object, in an official proceeding; or(C) prevent the communication by any person to a law enforcement officer or judge of the United States of information relating to the commission or possible commission of a Federal offense or a violation of conditions of probation, parole, or release pending judicial proceedings;shall be punished as provided in paragraph (3).(2) Whoever uses physical force or the threat of physical force against any person, or attempts to do so, with intent to—(A) influence, delay, or prevent the testimony of any person in an official proceeding;(B) cause or induce any person to—(i) withhold testimony, or withhold a record, document, or other object, from an official proceeding;(ii) alter, destroy, mutilate, or conceal an object with intent to impair the integrity or availability of the object for use in an official proceeding;(iii) evade legal process summoning that person to appear as a witness, or to produce a record, document, or other object, in an official proceeding; or(iv) be absent from an official proceeding to which that person has been summoned by legal process; or(C) hinder, delay, or prevent the communication to a law enforcement officer or judge of the United States of information relating to the commission or possible commission of a Federal offense or a violation of conditions of probation, supervised release, parole, or release pending judicial proceedings; shall be punished as provided in paragraph (3).
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