[pclmulqdq]

The correct way to interact with the American legal system is never to talk at all unless you have a written immunity deal. Kids should learn to say "no questions/searches" and "slide the warrant under the door" from their parents.

[0x3f]

Pre-lawyer it's never a good idea to talk. Post-lawyer often not either. But there are some rare cases you might negotiate a disclosure through your lawyer. For example, if they're about to ransack your home or get you fired from your job and you've got a rock-solid alibi.