Millions of people in Texas were left shivering without power, heat, and running water for several days this week and at least 30 died after a severe winter storm crippled power plants and the electricity grid.  Texas Sen. Ted Cruz said his family vacation to Mexico was “obviously a mistake” as he returned stateside Thursday following an uproar over his disappearance during a deadly winter storm. We're going to take an in-depth look at the failures of the Texas power grid and what it means to you.