Smoking
Only about 20% of the American public are smokers according to the latest 2012 data. Smoking bans and restrictions vary state by state and area by area but there are some general rules. Twenty seven states ban smoking in all enclosed places. That includes airports, hotels, stores, concert halls, etc. with some exceptions. For example, cigar bars obviously allow smoking. The states that do not ban smoking do allow local entities to restrict smoking. Always look for and follow the signage. Americans have little tolerance for smokers who violate the smoking bans due to concerns about second hand smoke dangers. Smokers are also often restricted from being within 15 feet (4.5 meters) of an entrance to a building. So smokers often are found standing some distance from an entrance smoking. American smokers almost never walk while smoking. Walking with a lit cigarette is considered rude. People in the USA are not expecting someone to be carrying hot embers at a child's face level and if you are walking with a cigarette you may find you have burned someone. Always ask if it is ok to smoke in a crowded area before lighting up.