Four months ago, as America’s monument to Dwight D. Eisenhower readied to open officially just off the national mall in Washington, the celebration was shuttered due to the COVID-19 pandemic. As the country grappled with its greatest crisis since the era that made Ike a hero, the symbol of the kind of nation he represented and tried to build — and the global role it aspired for — stood ready, gleaming, yet temporarily shuttered, awaiting a new day.