Washington’s new Museum of the American Museum tries for so much. But does it deliver? “Although architect Douglas Cardinal’s building has powerful moments, and several of the exhibits are intriguing, the $220 million museum is mostly a disappointment, a casualty of political infighting, scholarly temporizing and curatorial confusion. But the exhibits are the bigger letdown, mainly because with 800,000 artifacts in its possession, including the fabulous Heye Collection, the museum is in a position to do something spectacular. Yet the exhibits are technology-rich and object-poor and so badly organized that it is difficult to know where you are or how one section or theme relates to another.”