This is from the National Shooting Sports Foundation. This is only the latest attempt to attack firearms via the regulatory route. The poster child of this tactic is the various attempts (the most recent that I'm aware of was in 1999) to put the Consumer Product Safety Commission in charge of firearms.
Update: See also http://www.firearmscoalition.org/new/index.php?option=com_content&task=view&id=42&Itemid=37
Proposed OSHA Regulation Threatens
Firearm and Ammunition Industry
The Occupational Safety and Health Administration (OSHA), the government agency charged with assuring the safety and health of America's workers, is proposing a regulatory rule affecting the manufacturing, transportation and storage of small arms ammunition, primers and smokeless propellants. Continue reading NSSF: OSHA Rules Threaten Firearms Industry