Amend HB 2 at the end of SECTION 1 of the bill by adding the following new subsection: (__) The amounts appropriated by Subsections (a)(1)(B) and (a)(2)(B) of this section are contingent on the approval of HJR 65 or a similar measure by the 80th Legislature, Regular Session, 2007, proposing a constitutional amendment increasing the amount of the residence homestead exemption from ad valorem taxation for public school purposes to not less than $45,000 in order to provide further school property tax relief to local taxpayers. If the 80th Legislature, Regular Session, 2007, does not approve HJR 65 or a similar measure proposing a constitutional amendment increasing the amount of the residence homestead exemption from ad valorem taxation for public school purposes to not less than $45,000, the appropriations provided by Subsections (a)(1)(B) and (a)(2)(B) of this section have no effect.