Sorry Lynn4eva, Ponydance, Encumbrance- your questions are very specific and it seems that there is no one checking the boards now who knows your answers. You may want to use the Advance Search button above and find old discussions or maybe find a member who has talked about that and PM him/her.
(lynn4eva- it seems that USC admissions HAS started reviewing international applicants according to those international students who have posted about their status changes. I don't think it is an exact science where they finish all the US apps before starting on the international- I'm sure it is concurrent.)
(Ponydance- you may find some info on the NTSAF page-
USC Norman Topping Student Aid Fund
They also have an email you can contact.)
Good luck all!