Are these studies taken in every drainage in the West... don't think so.
I here Wolves and see scat in the woods and theres not a problem in my front yard YET!
Just because Knapweed isn't growing in my front yard doesn't mean it's not a problem in the state. Shall I conduct some research in my front yard to prove to you that no such problems exist's.......Of course not. Just as I am not going to listen to some study tell me one thing when I see another.
So if this is ignorance I guess thats me.
As far as the article published in American Hunter, this was WRITTEN by a local and not the NRA. Don't you think a Government Funded study want's to sway you just as you are saying the NRA is.
Do the Feds really want to come out and say they might have made a made a mistake?
And we are winning the war on drugs...Is another fun one.

I can stand on a soapbox and tell you the fire is hot all day,But some insist on touching just to make sure.