To determine the impact of gun shows, the authors traced the number of gun-related deaths in ZIP codes close to where gun shows took place, looking at how the number of deaths changed leading up to and following the shows. Researchers looked at the gun-related deaths in the weeks immediately after gun shows and actually found a small decline in the number of homicides following shows in Texas.
http://www.sciencedaily.com/releases/2008/10/081001184106.htm
Interesting article. People don't go to gun shows to buy a gun for their suicide after all. We still have to close the gun show loophole though. FOR THE CHILDREN!!!