"nor shall be compelled in any criminal case to be a witness against himself"
I'm no lawyer but this could be interpreted as you can't be forced to say anything, as in "pleading the 5th". However, does this mean that you can plead the 5th by with holding evidence? Kinda like can you refuse to unlock a door to your basement that may have incriminating evidence downstairs?
Dunno.......... just trying to understand.