San Francisco supervisors want to make the city the second in the nation to ban the ownership of handguns, but whether such a law would prove to be more than symbolic remains to be seen. First, legal challenges are being readied by those who see the proposed law — set to go to voters next fall — as bucking state law, which says law-abiding citizens do not need permits or licenses to keep handguns in their homes. Then there are practical hurdles: How do you... (GunPolicy.org)