In Colorado, things are a bit different. The police came and knocked on my door, answering a smell complaint. I showed them my paperwork and we went and had a thorough tour of my op.
It turns out I was in violation of a city ordinance banning more than twelve plants at a given address. I was given thirty days to come into compliance. This was my only violation, as my documentation was in order and I was within my approved count limits.
They were very nice and respectful, and offered to help ensure my carbon filter worked properly once I'm within compliance.
The last time this happened was twenty years ago, and resulted in a felony.
I think this is called 'progress'.