Many of us are familiar with the provision that interest against acquisition indebtedness (i.e. mortgages) up to $1,000,000 and another $100,000 of home equity is a Schedule A itemized deduction for income tax purposes. Unmarried taxpayers sought to “exploit” said provision by each claiming a mortgage interest deduction (thus doubling the limit) while the IRS argued the limit applied jointly. Want to see who won?