Jury nullification is not cited or mentioned in the 6th amendment....nor is it found in Article III.
They don't mention verdicts either, but we both understand that juries have within their power to announce them, right?
I'm working from the assumption you're being this pedantic because you're ignorant of the history. Ignorance is cool, because it can be addressed with information.
It is not a check and balance against unjust prosecution nor has it been long understood as such.
Do you have evidence otherwise, or is it just ignorance of the contrary evidence at play here?
I asked about the Peter Zenger case, but you were silent. Are you unaware of its place in our history, particularly our secession from Great Britain?
If this is something you just haven't learned about I'd encourage you to read more history. Acknowledging the difficulty in proving a negative, I think you'll have a hard time finding anyone at the founding who didn't understand this power held by juries.
"The most quoted instruction empowering a jury to judge the law comes from a civil case. In a rare jury trial in the United States Supreme Court, Chief Justice John Jay, speaking for a unanimous Court, instructed the jury:
“The facts comprehended in the case are agreed; the only point that remains, is to settle what is the law of the land arising from those facts; and on that point, it is proper, that the opinion of the court should be given. It is fortunate, on the present, as it must be on every occasion, to find the opinion of the court unanimous: we entertain no diversity of sentiment; and we have experienced no difficulty in uniting in the charge, which it is my province to deliver.”
“It may not be amiss, here, Gentlemen, to remind you of the good old rule, that on questions of fact, it is the province of the jury, on questions of law, it is the province of the court to decide. But
it must be observed that by the same law, which recognizes this reasonable distribution of jurisdiction, you have nevertheless a right to take upon yourselves to judge of both, and to determine the law as well as the fact in controversy. On this, and on every other occasion, however, we have no doubt, you will pay that respect, which is due to the opinion of the court: For, as on the one hand, it is presumed, that juries are the best judges of fact; it is, on the other hand, presumable, that the court are the best judges of the law. But still
both objects are lawfully within your power of decision.”
—
Georgia v. Brailsford, 3 U.S. (3 Dall.) 1 (1794)