Section 1717.659 - Effect of this subpart on RUS loan contract and mortgage(a) Nothing in this subpart shall affect any provision, covenant, or requirement in the RUS mortgage, RUS loan contract, or any other agreement between a borrower and RUS with respect to any matter other than the prior approval by RUS of investments, loans, and guarantees by the borrower, such matters including, without limitation, extensions, additions, and modifications of the borrower's electric system. Also, nothing in this subpart shall affect any rights which supplemental lenders have under the RUS mortgage, or under their loan contracts or other agreements with their borrowers, to limit investments, loans and guarantees by their borrowers to levels below 15 percent of total utility plant.(b) RUS will require that any electric loan made or guaranteed by RUS after October 23, 1995 shall be subject to a provision in the loan contract or mortgage restricting investments, loans and guarantees by the borrower substantially as follows: The borrower shall not make any loan or advance to, or make any investment in, or purchase or make any commitment to purchase any stock, bonds, notes or other securities of, or guaranty, assume or otherwise become obligated or liable with respect to the obligations of, any other person, firm or corporation, except as permitted by the RE Act and RUS regulations.(c) RUS reserves the right to change the provisions of the RUS mortgage and loan contract relating to RUS approval of investments, loans and guarantees made by the borrower, on a case-by-case basis, in connection with providing additional financial assistance to a borrower after October 23, 1995.