WASHINGTON -- For her own Women's History Month assignment, first lady Michelle Obama visited Anacostia High School, on the poor side of town, where on Thursday she surprised a group of students. One of her goals is to demystify the White House and make it more accessible to the people who live here. Mrs. Obama told the youngsters she felt isolated from an institution in her own community when she was growing up and that she suspected they may view the White House and the Capitol the way she saw the University of Chicago as a young girl -- a...