SACRAMENTO — In an effort to curb deadly gun violence, the state Assembly on Tuesday passed a bill that would make California the first in the nation to require a mechanism inside semiautomatic pistols to stamp information that would help authorities track down criminals. "About 45 percent of all homicides are never solved … for lack of evidence," the bill's author, Assemblyman Mike Feuer, D-Los Angeles, said on the floor of the Assembly. "But we have the... (GunPolicy.org)