Hi
@fish farmer . I can understand it must be very frustrating trying to wade through state laws in the US. Fortunately for me living in a tiny country like England . The laws are very much restricted to laws governing the whole of the country, with only minor colloquial by- laws that originate from centuries ago. such as allowing ones sheep to graze on common land.
If the laws applied in a any particular state are created through a democratic process then yes, if its legal in that state it can IMO be deemed ethical in that state. For instance, is it unethical to deliberately break a democratic law accepted by the majority of any given state. I believe it would generally be accepted as unethical. However through the process of democracy any individual of that state has the democratic right to both debate and demonstrate for a change in the law through referendum or the voting system.
Some laws that vary over wide geographic areas may be imposed to protect indigenous wildlife. For instance, the UK has a temperate climate, therefore there are far less restrictions on the movement of tropical fish species than cold water species. The USA covers both Temperate, Arctic and sub tropical regions. I can in this instance see it necessary to vary any laws to accomodate these conditions.
IMO no country has the right to impose on any other country, ethics based on one particular culture or religion. Unless there is a clear attempt by either party to disrupt or enforce a foreign set of values over the other party. Could one for instance seriously suggest that any generally accepted ethical values directly linked to ones own culture be classed as superior to any other. However, any culture has the right to reject any common trade from a country that does not share a common value or whose values are in direct contradiction of their own.
Many institutions and professions have a code of ethics. Including but not limited to , banking, medical and scientific. Although particular to their own professions none of these ethical guidelines should vary outside the law of the democratic state. Maybe it could be argued that as hobbyists we should also have a more clearly defined code of ethics. Personally in my own community I believe the Law has most of the areas covered.