33 U.S.C. § 916 : US Code - Section 916: Assignment and exemption from claims of creditors

      No assignment, release, or commutation of compensation or
    benefits due or payable under this chapter, except as provided by
    this chapter, shall be valid, and such compensation and benefits
    shall be exempt from all claims of creditors and from levy,
    execution, and attachment or other remedy for recovery or
    collection of a debt, which exemption may not be waived.