United States. Congress

“ Mirror code tax system.— For purposes of this subsection, the term "mirror code tax system" means, with respect to any possession of the United States, the income tax system of such possession if the income tax liability of the residents of such possession under such system is determined by reference to the income tax laws of the United States as if such possession were the United States. ”

“ In general.—The amount allowable as a credit under subsection (a) (determined without regard to this paragraph and subsection (c) ) for the taxable year shall be reduced (but not below zero) by 2 percent of so much of the taxpayer's modified adjusted gross income as exceeds $75,000 ($150,000 in the case of a joint return) . " (2) Modified adjusted gross income.—For purposes of subparagraph (A) , the term `modified adjusted gross income' means the adjusted gross income of the taxpayer for the taxable year increased by any amount excluded from gross income under section 911, 931, or 933. " ”