(b) Whoever knowingly uses intimidation, threatens, or corruptly persuades another person, or attempts to do so, or engages in misleading conduct toward another person, with intent to—
(1) influence, delay, or prevent the testimony of any person in an official proceeding;
(2) cause or induce any person to—
(A) withhold testimony, or withhold a record, document, or other object, from an official proceeding;
(B) alter, destroy, mutilate, or conceal an object with intent to impair the object’s integrity or availability for use in an official proceeding;
(C) 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
(D) be absent from an official proceeding to which such person has been summoned by legal process; or
(3) 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 [1] supervised release,,[1] parole, or release pending judicial proceedings;
shall be fined under this title or imprisoned not more than 20 years, or both.
(c) Whoever corruptly—
(1) alters, destroys, mutilates, or conceals a record, document, or other object, or attempts to do so, with the intent to impair the object’s integrity or availability for use in an official proceeding; or
(2) otherwise obstructs, influences, or impedes any official proceeding, or attempts to do so,
shall be fined under this title or imprisoned not more than 20 years, or both.
(d) Whoever intentionally harasses another person and thereby hinders, delays, prevents, or dissuades any person from—
(1) attending or testifying in an official proceeding;
(2) reporting to a law enforcement officer or judge of the United States the commission or possible commission of a Federal offense or a violation of conditions of probation [1] supervised release,,[1] parole, or release pending judicial proceedings;
(3) arresting or seeking the arrest of another person in connection with a Federal offense; or
(4) causing a criminal prosecution, or a parole or probation revocation proceeding, to be sought or instituted, or assisting in such prosecution or proceeding;
or attempts to do so, shall be fined under this title or imprisoned not more than 3 years, or both.
(e) In a prosecution for an offense under this section, it is an affirmative defense, as to which the defendant has the burden of proof by a preponderance of the evidence, that the conduct consisted solely of lawful conduct and that the defendant’s sole intention was to encourage, induce, or cause the other person to testify truthfully.
(f) For the purposes of this section—
(1) an official proceeding need not be pending or about to be instituted at the time of the offense; and
(2) the testimony, or the record, document, or other object need not be admissible in evidence or free of a claim of privilege.