I think his top choice is the White House for security reasons and it is a majestic site. However, Nasty Nan is opposed and will try to stop it. The Gov of PA has already come out and put crowd restrictions on Gettysburg—of course, he did. Soooo he may be able to say—we have no choice but the White House. Winning!
Yes, the White House Lawn with two hundred loyal followers seated out front would work nicely I think....and surely would be more secure.