Dianne Feinstein announced Wednesday that she’s re-entering the battle over gun control during her keynote speech to the California delegates to the Democratic National Convention. Feinstein was president of the San Francisco’s Board of Supervisors on what she calls that city’s “day of infamy” in 1978, when a former colleague shot and killed Harvey Milk and Mayor George Moscone. Since then, Senator Feinstein has been one of the most vocal proponents of gun control on Capitol Hill. She promised California delegates she’d return to Congress to reintroduce “an updated assault weapons bill.” At the delegates' breakfast, she said that, "Weapons...