Nothing contained in § 44-8-20 or 44-8-21 shall apply to purchase money mortgages, or notes held by the United States of America, or any agent, agency, or instrumentality thereof, or any corporation or association whose obligations are guaranteed in whole or in part by the United States of America, and it, or such agencies, instrumentalities, corporations, or associations shall be entitled to enforce such mortgages, mortgage notes, and to have judgments thereon and collect deficiencies thereon, anything in said sections to the contrary notwithstanding.
SDCL 44-8-24