Current background checks look for any criminal records. In this time of tragedy, a check on mental health history when purchasing a firearm should be made law rather than banning the sale of assault weapons as a response to the latest shooting spree.
The last assault ban caused crime to increase, and just because of an isolated unfortunate incident where children were killed does not make it acceptable to infringe on the rights of law abiding US gun owning citizens
A better background check would prevent the mentally deranged from buying a firearm



