To restore confidence in banks you need first to restore the banks self-confidence
My first action as a regulator would be to tell the markets…
“Hold it there, those that really got us all into trouble were the credit rating agencies and we are very sorry we empowered them so much. Therefore, effective immediately we suspend all the regulations that assign a formal role to the credit rating agencies. Truth be said, admittedly late, we do believe that the banks are more capable if they have all the authority to decide on their own what is best for them.”