Some insurance companies consider credit when deciding whether or not to insure someone. They use third party companies that provide them with this information. He could contact the insurance company to explain his personal situation. It is possible that they may make an exception.
We offer many companies that write insurance without using your credit information. If you would like a quote just follow the link. Put in your zip code, follow the online directions and you will get a quote from a companies that don't require your credit information.