(Bloomberg) -- Flight cancellations are already piling up as a winter storm bears down on Texas and the US South, bringing snow and ice that could coat power lines and trigger blackouts.Most Read from BloombergNYC’s Subway Violence Deters Drive to Bring Workers Back to OfficeDutch Central Bank Restores Amsterdam’s ‘Ugliest Building’Can American Drivers Learn to Love Roundabouts?NYC Condo Owners May Bear Costs of Landmark Green Building LawCan States Hit the Brakes on Runaway Roadbuilding?As of 7