Same-sex couples who get a marriage license in a state that has redefined marriage to include same-sex couples, but who live in a state that does not recognize their marriage, will be treated as a married couple for federal tax purposes, the Treasury Department and Internal Revenue Service announced Thursday. The change in tax policy came after the U.S. Supreme Court this Summer struck down a provision in the Defense of Marriage Act that says marriage will be defined as the union of one man and one woman for the purposes of federal law. The decision left unclear what it...