The destruction of the World Trade Center complex on 9/11 set in motion a chain of events that fundamentally transformed both the United States and the wider world. War has raged in the Middle East for a decade and a half, and Americans have become accustomed to surveillance, enhanced security, and periodic terrorist attacks. But the symbolic locus of the post-9/11 world has always been -Ground Zero---the sixteen acres in Manhattan's financial district where the twin towers collapsed. While idealism dominated in the initial rebuilding phase, interest-group trench warfare soon ensued. Myriad...