"Silverstein owns it."

I'm sorry, but there is no record I could find of that. Every story I found lists three investors - Goldman, Cayre and Feil. While it would not surprise to me find Silverstein has some investment in it, there is nothing out there that says he or Silverstein Properties are involved.   I also could not find anything about Marvin Bush being involved.   If you have such reports, rather than you opinion which you are claming is fact, I would love to see it.