Green was the pilot who died at the Rothschild's castle in England. Maybe related? Payback time?
I don't think so. That would make the wall a Military Construction Project. I'm not seeing a way around the statutory requirements.
http:// uscode.house.gov/view.xhtml?hl=false&edition=prelim&req=granuleid%3AUSC-prelim-title10-section2802&num=0&saved=%7CZ3JhbnVsZWlkOlVTQy1wcmVsaW0tdGl0bGUxMC1zZWN0aW9uMjgwMg%3D%3D%7C%7C%7C0%7Cfalse%7Cprelim