Matt,
Yes, actually I DO know the difference between WAS and STL (or St. Louis Union Station, for that matter).
But your Legacy citation did say every state, and I thought that might include a Federal District or two, as well.
Seriously, my personal opinion of naming public facilities for political figures (outside of bona fide memorials and monuments) is that it is usually a fairly hollow gesture.
But my point is this: if, by associating by name Amtrak's HQ building with the apparently admired legacy of our dear departed president, we also help ensure Amtrak's fortunes (admittedly, a flimsy proposition) I'm all for it.