Is it illegal for a bank to open a business checking account to a company...

[Horse Store]

...whose owner has a state tax lien? We wanted to move our business checking account to another bank offering more services and were denied an account because of a state tax lien. Is this the law or is this the bank not wanting to deal with any hassle of a bank levy? The tax debt has since been put into a reorganization wage earner bankruptcy and is being paid every month. Would we be able to propose this to the new bank and have a better chance of getting an account or is just a legal matter that they cannot. The tax lien will stay on our credit report until it is completely paid (not for a while yet)