I live in a state with transparent salary laws and this argument that posting the salary range isn’t deceptive is laughable. If that were true, why wouldn’t they be transparent and make it clear it’s a salary range and not a hiring range? The fact is, most people searching for a job are most interested in what they would be earning when they’re hired, not a theoretical wage 5, 10, or 15 years in the future.
Generally speaking you are taxed/follow employment laws of the state you do the work in.