Most states have guaranty funds to help pay the claims of financially impaired insurance companies. State laws specify the lines of insurance covered by these funds and the dollar limits payable. Coverage is usually for individual policyholders and their beneficiaries and not for values held in unallocated group contracts.
Most states also restrict insurance agents and companies from advertising the funds' availability.
There are many issues, too numerous to describe here, which determine the type and extent of coverage available. You are advised to consult your state insurance department for details about any policy you consider purchasing.