(a) If an election held under Section 55.530 of this code favors the issuance of additional bonds or execution of a contract with the United States, the board may issue the bonds or negotiate and execute a supplemental contract with the United States in the manner provided in this chapter.
(b) If a contract is made with the United States under Section 55.185 of this code and bonds are not deposited with the United States, the district is not required to issue bonds, and if the district is required to raise funds in addition to the amount of the contract, the district shall issue the bonds only for the additional amount which is needed.