Well, look at Europe and France, they have banded guns & they have higher gun crimes considering that they aren't suppose to be able to have guns. If you look at where the U.S. has been having gun crimes it has been in gun free zones. State buildings, government buildings, schools, churches, public meeting areas, military areas and places that have a large mass of people is where mass shootings occur, because the criminal knows the major percentage of people don't carry a weapon and they know they have a larger chance of surviving or to know that if they do die that they would have took as many as they can before they die. The background check don't work, because felons aren't suppose to be able to have guns but if they want one they can still get one. Background checks henders  honest U.S. citizens not criminals. The people that makes these faults laws against the U.S. citizens are people that never had their butts busted, always got their way, parents never spent time with them, never had to grow up on a farm, or work a hard jub, and never had to hunt or fish let along for fun. A county that can not defend it's self is a slave county to the world.