Three basic elements are common to most of the relevant obstruction statutes: (1) an obstructive act; (2) a nexus between the obstructive act and an official proceeding; and (3) a corrupt intent. See, e.g., 18 U.S.C. §§ 1503, 1505, 1512(c)(2). We describe those elements as they have been interpreted by the courts. We then discuss a more specific statute aimed at witness tampering, see 18 U.S.C. § 1512(b), and describe the requirements for attempted offenses and endeavors to obstruct justice, see 18 U.S.C. §§ 1503, 1512(c)(2).
