WASHINGTON, DC (AP).- Lady Bird Johnson said walking through the White House was like walking "through history." Hillary Clinton called the home "a repository of America's storied past." Michelle Obama has called it "awe inspiring." The authors of a new book have another name for the president's residence at 1600 Pennsylvania Ave.: "the American house next door." "Americans have this sense of the White House as something apart ... it doesn't seem to change from the outside, but that doesn't mean it