March 27 (Bloomberg) — Roberta Kaplan, a lawyer representing Edie Windsor, speaks at a news conference in Washington about Supreme Court hearings into the constitutionality of a federal law defining marriage as a heterosexual union. The Defense of Marriage Act, known as DOMA, is being challenged by Windsor, an 83-year-old New York resident. Windsor, James Essex and Donna Lieberman of the American Civil Liberties Union and Pamela Karlan of Stanford University also speak. (Source: Bloomberg).