What states are surcharge illegal?

Could you please clarify for me which states in the United States have laws that prohibit or make it illegal to impose surcharges on consumers? I'm interested in understanding the regulatory landscape for businesses that may be considering adding a surcharge to their transactions. Additionally, I'm wondering if there are any specific industries or types of transactions that are more likely to be affected by these laws. It would be helpful if you could provide an overview of the legal implications for businesses operating in these states, as well as any potential consequences for violating these laws.