WASHINGTON -- Asked to resign by the chairman of the board of trustees, the director of Washington's oldest art museum said Monday he would remain for the next few days. David C. Levy, 67, president and director of the Corcoran Gallery of Art since 1991, submitted his resignation at a board meeting, The Washington Post reported in Tuesday editions. • Board chairman John T. Hazel, who sought the resignation, had clashed with Levy over plans to build a new wing for the museum. The board suspended the project at its meeting Monday, the Post said. Levy emerged from the board...