Well, pretty much everyone legally able to own a gun (and WANTS to own one) already does. The only way to add more guns is to toss out background checks (and I really don’t want psychotic’s running around with loaded weapons) OR forcing people to buy a gun who don’t want one. And many, many people don’t seem to realize that openly carrying a fire arm is not against the law in most of the US. It’s just not very common in most parts of the country.
Three states (California, Florida, and Illinois) and the District of Columbia generally prohibit people from openly carrying firearms in public. Two states (New York and South Carolina) prohibit openly carrying handguns, but not long guns, and another three states (Massachusetts, Minnesota, and New Jersey) prohibit openly carrying long guns, but not handguns. In the remaining states, people are generally allowed to openly carry firearms, although some states require a permit or license to do so.
Please also note that open carry laws are usually subject to significant exceptions. Most states that allow open carrying still prohibit carrying firearms in some specific locations such as schools, state-owned businesses, places where alcohol is served, and on public transportation.
For your viewing pleasure.