I was going to comment on the man who wanted to be a Hooters girl, but could only come up with " WTF?"
I'm an ex-smoker but I'm not anti-smoking. That being said, a business ( and most hospitals in the US are a business) have the right to hire whom they choose. If they don't want to hire smokers, they don't have to. As stated previously, smoking is a choice and not a generic problem. Just as smokers choose to do so, the employer, in this case the hospital, can choose not to hire a smoker.
The hospital is an institution of health. As we are all aware, smoking is bad for you. To me, it makes perfect sense not to have smoking on the campus. The hospital is well within their rights. They are offering to help current employees help to stop smoking and all future employees will have to be non-smokers. The benefits to the hospital as well as it's employees will be tremendous and too numerous to mention here.