Does obstruction always involve bribery or physical force?
No. One particularly murky category of obstruction is the use of “misleading conduct” toward another person for the purpose of obstructing justice. “Misleading conduct” may consist of deliberate lies or “material omissions” (leaving out facts which are crucial to a case). It may also include knowingly submitting or inviting a judge or jury to rely on false or misleading physical evidence, such as documents, maps, photographs or other objects. Any other “trick, scheme, or device with intent to mislead” may constitute a “misleading conduct” form of obstruction.