The complicated crime of "obstruction of justice" includes a variety of activities intended to obstruct or interfere with the legal system, including as attempts to obstruct investigations, influence witnesses, or destroy evidence. Lawyers who practice in this field frequently handle high-stakes matters involving major crimes like evidence tampering, bribery, and perjury. Obstruction of justice carries harsh penalties, particularly at the federal level where offenders may be hit with huge fines or protracted jail terms.