An LLC insulates you from nothing and if he is the owner of the LLC he is going to pay.
The job creator is always on the hook if he owns the LLC and if he has any assets.
Actually I think you are mistaken. Bankruptcy and the LLC will protect from most things except the IRS. They will track him down until he pays everything that should have been sent into the goverment or until they settle with him.
An LLC doesn't pay income taxes. The profits pass through to the owners who pay personal income taxes on those profits.
I only point out this distinction because the LLC limits the owner's liability for all business activities related to the business. Federal income taxes are unrelated to the business.
The county can't put a tax lien on an LLC owners home to enforce payment of the property taxes that the LLC owes, for instance.