I believe this will have little effect on most of us. Looking at the details, I found that, according to Field & Stream magazine, this means that "...if you're shooting nuisance birds under a federal depredation permit you must now, apparently, use non-toxic ammo. However, the ruling doesn't say anything about the sport hunting of crows in states where that is legal and there's an established season." (emphasis mine).

reference: http://www.fieldandstream.com/blogs/...n-bird-hunting