Securities Act of 1933: Primary federal law governing registration requirements and exemptions for securities offerings, including debentures. Key focus on disclosure requirements and registration process.

Securities Exchange Act of 1934: Federal law regulating secondary market trading of securities and establishing ongoing reporting requirements for issuers.

Trust Indenture Act of 1939: Federal law governing the provisions of trust indentures under which debt securities, including debentures, are issued. Particularly relevant for publicly offered debentures.

State Blue Sky Laws: State-specific securities laws governing registration, exemption, and disclosure requirements for securities offerings within each state's jurisdiction.

Investment Company Act of 1940: Federal law regulating investment companies and their activities, which may be relevant depending on the issuer's status and business activities.

Uniform Commercial Code: State-adopted uniform law governing commercial transactions, particularly Article 8 (Investment Securities) and Article 9 (Secured Transactions) for debenture-related matters.

Internal Revenue Code: Federal tax law provisions governing the tax treatment of debt instruments, including debentures, for both issuers and holders.

Dodd-Frank Act: Comprehensive financial reform legislation affecting various aspects of financial instruments and markets, including certain types of debentures.

Regulation D: SEC regulations providing safe harbor exemptions from securities registration requirements, commonly used for private placement of debentures.

U.S. Bankruptcy Code: Federal law governing bankruptcy proceedings, including provisions affecting creditor rights and priority rules relevant to debenture holders.

State Corporate Laws: State-specific laws governing corporate authority to issue debentures and related corporate governance requirements.