(This article is about a U.S. political term. For information about U.S. gun shows, see Gun shows in the United States.) Gun show loophole, gun law loophole, Brady law loophole (or Brady bill loophole), private sale loophole, and private sale exemption are political terms in the United States referring to sales of firearms by private sellers, including those done at gun shows, dubbed the "secondary market". The term refers to the concept that a loophole in federal law exists, under which "[a]ny person may sell a firearm to an unlicensed resident of the state where they reside, as long as they do not know or have reasonable cause to believe the person is prohibited from receiving or possessing firearms".