Considering Revelation deals with the Jewish nation and the return of 'Messiah' I don't see the US playing so large a role in the end times.
The two witnesses will preach from the newly built 3rd temple. 3 1/2 yrs and then the BEAST will kill them … they stay dead 3 days then are resurrected and taken up for all to see. (I believe this is when the Rapture occurs).
After they're taking up the 3 1/2 year tribulation takes place.