The assessor shall administer the 2003 Maine Tax Amnesty Program. The amnesty program applies to tax liabilities delinquent as of August 31, 2003, including tax due for which a return has not been filed. A taxpayer may participate in the tax amnesty program whether or not the taxpayer is under audit and without regard to whether the amount due is subject to a pending administrative or judicial proceeding, except that this does not include pending criminal action or debts for which the State has secured a warrant or civil judgment in its favor in Superior Court. A taxpayer may participate in the tax amnesty program to the extent of the uncontested portion of an assessed liability. Participation in the program is conditioned upon the taxpayer's agreement to forgo the right to protest or pursue an administrative or judicial proceeding with regard to returns filed under the tax amnesty program or to claim any refund of money paid under the tax amnesty program. A taxpayer with a tax liability within the limitations of this chapter is absolved from criminal or civil prosecution or civil penalties plus 1/2 of the interest associated with any such liability except as otherwise provided in this chapter if the taxpayer:   [PL 2003, c. 451, Pt. E, §9 (AMD).]