It took me less than half a lifetime to realize that regret is one of the few guaranteed certainties. Sooner or later everything is touched by it, despite our naive and senseless hope that just this time we will be spared its cold hand on our heart.
There should be a background check every time a firearm is transferred. You shouldn't be able to go to a gun show and buy guns without a background check. There are Internet gun sales, classified ads in the newspapers - and you can buy guns without background checks.