Is North Carolina's 'fat tax' necessary or too invasive?

North Carolina is planning to impose a fee on state employees who are obese or are smokers, by putting them on a more expensive health insurance plan. Officials haven't estimated the amount of money the state will save by enacting the fee, but say the higher costs for smokers could save $13 million next year. What do you think about this? Does the fee make sense? Is it a way to make people take personal responsibility for their health or is it an abuse of power by the state? Share your thoughts!