Despite the fact that the United States has a very, very high rate of gun deaths compared to other developed countries, we actually know very little about the public-health threat posed by firearms. That's because Congress, working closely with the NRA, passed legislation in the 1990s barring the Centers for Disease control from spending money on any research that could be seen as pro-gun-control, and the CDC has interpreted this ban in a broad manner — the NRA's... (GunPolicy.org)