It is, but you need the whole jury to vote that way which i find particularly unlikely. One person voting for nullification, which is more likely, is a mistrial.

I am not a lawyer.

Nullification is when the jury hands in a verdict of "not guilty", even though there's a preponderance of evidence that the law was indeed broken by the defendant. They basically ignore the Judge's instructions to weigh the evidence and do something else instead. This would trigger an appeal by the prosecution on the basis of mistrial, since the optics on that situation look like something procedural is way off.

I'm not well-versed in these matters, but I am intrigued by what would happen if this went to appeal. If it went all the way to SCOTUS, or even some appeals court with a crooked judge, that might not go so well for the defendant.