Millions of Californians would not be able to smoke tobacco inside their own homes under new legislation that would raise the bar nationwide for fighting secondhand smoke. No state ever has ventured into personal bedrooms and living rooms with its smoking restrictions, but California is going even further than that by targeting owner-occupied residences as well as rental units. Specifically, the measure would prohibit lighting up a cigarette, cigar or pipe in condominiums, duplexes and apartment units. The push would extend a lengthy list of places where smoking already is barred, including restaurants, workplaces, playgrounds, public buildings and cars containing...