I will certainly not try to argue law with you.  A question, though: if it is a state's responsibility to keep its people safe, why is it unpopular to put reasonable restrictions on who can own one (such as indication of mental stability, or a rule that training must be included with a purchase)?  Why should a competent, law-abiding citizen mind proving it, and how can that curtail freedom?  We certainly comply with laws that say we can't walk into a store and help ourselves to the merchandise, but panic at any mention of restriction on gun ownership .