If SBA agrees to guarantee a Licensee's Debentures or Participating Securities, such guarantee will be unconditional, irrespective of the validity, regularity or enforceability of the Debentures or Participating Securities or any other circumstances which might constitute a legal or equitable discharge or defense of a guarantor. Pursuant to its guarantee, SBA will make timely payments of principal and interest on the Debentures or the Redemption Price of and Prioritized Payments on the Participating Securities.
13 C.F.R. §107.1720