; and (ii) shall remain in effect until the guarantee obligations described under paragraphs (1)(B) and (2)(B) of this subsection are fully extinguished. (C) Applicability All guarantee fee amounts derived from the single-family mortgage guarantee business of the enterprises in existence as of five years after the date of the enactment of the Protecting American Taxpayers and Homeowners Act of 2018 shall be deposited into the United States Treasury, for purposes of deficit reduction. (D) Senior Preferred Stock Purchase Agreement defined For purposes of this paragraph, the term Senior Preferred Stock Purchase Agreement means— (i) the Amended and Restated Senior Preferred Stock Purchase Agreement, dated September 26, 2008, as such Agreement has been amended on May 6, 2009, December 24, 2009, and August 17, 2012, respectively, as such Agreement has been modified by the Letter Agreements between the Secretary of the Treasury and the conservator of the enterprises dated December 21, 2017, and as such Agreement may be further amended and restated, entered into between the Department of the Treasury and each enterprise, as applicable