7 C.F.R. § 1493.510
(b) Amount of CCC's liability. Subject to a determination by CCC with respect to prevailing U.S. market value pursuant to § 1493.450(a) of this part, CCC's maximum liability for any claims for loss submitted with respect to any payment guarantee, not including any late interest payments due in accordance with paragraph (c) of this section, will be limited to the lesser of:
(e) Action against the assignee. Notwithstanding any other provision in this subpart to the contrary, with regard to commodities covered by a payment guarantee, CCC will not, except pursuant to a determination under § 1493.450(a) of this part, hold the assignee responsible or take any action or raise any defense against the assignee for any action, omission, or statement by the exporter of which the assignee has no knowledge, provided that: