What Bush should do -
1. Drop Universal Suffrage and adopt Police State: +25% Military Unit production , -50% War Weariness! Plus, he already had the Mount Rushmore national wonder! WW won't be a problem even if he goes for Syria and Saudi-Arabia as well!
2. Screw Bureaucracy, get Nationhood; +2 happiness in all cities with barracks (which must be just about every important US city), plus he can draft a Mech Infantry division
each turn!
3. Labour civics - now this is obvious. The South was great for a reason. Adopt Slavery and rush-build courthouses in Teheran!
4. Once mushroom clouds rise, nobody will want to trade with the US , so he might as well go for Mercantilism. One extra great specialist easily makes up for the lack of foreign trade routes!
5. Finally, stop that Free Religion nonsense - adopt Christianity as State Religion, and select Theocracy. Cities with churches get +1 happiness, it will stop the spreading of the most wicked of all faiths, Islam, and last but not least, it will give new US troops an extra +2XP, ie, a free promotion!