Do you want to hold a person who sells a car responsible if the person that buys it kills someone?
How about if I sell my knife and the person that buys it uses it to kill someone, should I have made sure that they were not going to kill someone first? Should I be held liable?
It is not a loophole because no law anywhere makes a private individual responsible for the actions of a person he has no control over. Calling it a loophole just makes you look incredibly stupid, something you usually manage to avoid.
Cars and knives, in most cases, are necessary to survival. One must drive to work, and cut their bread with something.
Unless your only source of food is to hunt your own game, guns are not necessary to survival.
And just because Frank Luntz has handed down word that the word "Loophole" should now be changed to a nicer, more gun-friendly term, doesn't mean I have to use it.
Both of us can speak truthfully, and say different things, it is simply a matter of perspective.
My "Loophole" is your "Gawd-Given Right". Your "Freedom Fry" is my "French Fry".