The White House ballroom is a legitimate national security upgrade that presidents have sought for over a century, and the Supreme Court was right to let construction continue. The project is ahead of schedule and under budget, delivering a hardened facility with bomb shelters, a hospital, sniper nests and a drone port that protects the president and visiting foreign leaders. Halting construction mid-build would have caused irreversible damage to a critical security complex — that's not preserving history, that's endangering lives.