From my understanding, judges/prosecutors are trying to make no mention whatsoever about nullification. Probably because then juror might actually consider it.
But I am not citizen and never been juror or witnessed one :) just read some wiki pages.
My understanding is that they absolutely will not mention it by name, or even elude to it, but will instead ask questions which would cover it.
For instance something like, "Are you willing to carry out the law as it is written?" or "Are you willing to decide this case based on the facts presented to you." or something else to that effect. If you know of and believe in jury nullification, the honest answer to those questions is "No." That might not be exactly what they ask, but I think it's something like that at least.
I can retroactively justify an answer of "yes" to those questions. Also presumably I wouldn't explicitly state I was using jury nullification, as I am only required to return a verdict.
>Are you willing to carry out the law as it is written?
Yes. As written, I can deliver whatever verdict I want and the law says I cannot be prosecuted for it.
>Are you willing to decide this case based on the facts presented to you
Yes. With the facts given to me, I choose not to convict this person.
But I am not citizen and never been juror or witnessed one :) just read some wiki pages.