shows had FFLs. Only buyers from within the state may purchase handguns. Gun show loophole The so-called "Gun show loophole" is a controversial political term in the United States coined by gun control supporters that refers to sales of firearms by private sellers, including those done at gun shows. Under federal law, private-party sellers are not required to perform background checks on buyers. Private sellers are also not required to record the sale or ask for identification. There are some Federal rules regarding the sales. As of August 2013, 33 states do not require background checks for sales of firearms by private individuals, while 17 states and Washington, D.C., do require background checks for some or all private firearm sales. This is in contrast to sales by gun stores and other Federal Firearms License holders, who are required by federal law to perform background checks of all buyers, and to record all sales, regardless of venue (i.e. private sales). Research and studies In 2000, the Bureau of Alcohol, Tobacco and Firearms (ATF) published "Following the Gun", its analysis of more than 1,530 trafficking investigations over a two-and-a-half-year period and found gun shows to have the second highest number of trafficked guns per investigation, after corrupt FFL dealers. (Straw purchasers were the most common channel, but averaged a relatively small number of trafficked guns per investigation compared to corrupt FFLs and gun shows.) These investigations involved a total of 84,128 firearms that had been diverted from legal to illegal commerce. All told, the report identified more than 26,000 firearms that had been illegally trafficked through gun shows in 212 separate investigations. The report stated that: A prior review of ATF gun show investigations shows that prohibited persons, such as convicted felons and juveniles, do personally buy firearms at gun shows and gun shows are sources of firearms that are trafficked to such prohibited persons. The gun show review found that firearms were diverted at and through gun shows by straw purchasers, unregulated private sellers, and licensed dealers. Felons were associated with selling or purchasing firearms in 46 percent of the gun show investigations. Firearms that were illegally diverted at or through gun shows were recovered in subsequent crimes, including homicide and robbery, in more than a third of the gun show investigations. A Bureau of Justice Statistics (BJS) report on "Firearms Use by Offenders" found that only 0.8% of prison inmates