Is it illegal in Texas to charge a credit card fee?

Could you please clarify for me, is it considered illegal in the state of Texas to impose a fee on customers who choose to pay with a credit card? I'm curious about the legal standing of such practices and whether there are any specific regulations or guidelines that businesses must adhere to in this regard. Additionally, are there any exceptions or circumstances under which charging a credit card fee would be permissible? Thank you for your assistance in clarifying this matter.