Senators Schumer and Gillibrand will both be in attendance. Congressman Nadler, who represents ground zero, will also be there. As will Republican Congressman Peter King, who chairs the Homeland Security Committee. King has frequently criticized the president in the past, but has expressed nothing but praise for his handling of the strike that resulted in the death of Osama bin Laden on Sunday.

Mayor Bloomberg is also expected to attend, and there's a possibility--unconfirmed, of course--that Andrew Cuomo will make the trip from Albany.

There might be some formerly-elected officials too. Former Mayor Rudy Giuliani told Politico he's considering the invitation, and a spokesman for former Governor George Pataki told the Daily News he'd like to attend, if he can get back in time from a trip to Texas.