Genworth Financial Inc.’s U.S. mortgage insurance segment continued to be a burden to its parent despite reporting a narrower operating loss of $34 million in the fourth quarter of 2012, compared to losses of $38 million in the prior quarter and $96 million in the prior year. Nonetheless, the reduced amount of losses during the period was good news to company executives who reported net income of $166 million, or 34 cents a share, during the period from $142 million, or 29 cents, a year earlier. Operating profit was $167 million, or 34 cents a share, up from ...