Is smoking slowly becoming illegal in the US?

In Bangor Maine if you are pulled over, smoking in your own vehicle with a child present you will be fined. Yes it is bad to do but as you said...whats next...if you got buying your obese child sugary foods or fast food will you then be fined? I do think it is disrespectful to smoke around non smokers however also. I do not like to eat and have smoke around me while I am eating. I also dont like to be in a vehicle full of smoke. I can understand this and I am a smoker. It should not be made illegal, if a woman has a choice to have an abortion because it is her body then smokers should have a choice to smoke or not because it is their body but I do not believe in putting others at risk.