[gizmo385]

> like "lying (not volunteering incriminating evidence) to an investigator"

This is literally the purpose of the 5th amendment. If you get asked a question where the answer would incriminate you, you are well within your rights to refuse to answer the question. Taking the path of deliberately attempt to mislead investigators is most certainly a crime and it should be.

[ramblerouser]

In principle I agree with you. In practice however, the FBI just uses this to harrass people. Look at what happened to Marth Stewart. She was totally innocent, did not say anything factually incorrect, but the feds thought she exagerated in some of her answers. That level of subjectivity shouldn't be involved in determining a criminal offense.