Requested of the EPA by enviro-wackos. http://green.blogs.nytimes.com/2012/03/15/zeroing-in-on-lead-in-hunters-bullets/ To their credit, even the power-hungry EPA wants no part of this nonsense - for now. But under Obama, no outrage is too outrageous.
Bullets that do not contain lead have been in the works for a while. However, this is a somewhat aggressive and intrusive movement.
Bismuth can be used as a replacement for lead in shotgun pellets. Animals swallowing lead shotgun pellets are a serious problem in some areas. But I am against banning lead in regular bullets.