My plan:
Cut education, business subsidies, and administration costs. Solve the resulting depression by printing lots of money. The resulting hyperinflation will devalue our dept to china. During this period, use as much money as possible to finish the space defense system. Once we are safe from nukes, annex the middle east. Threaten other countries with not having oil. Anyone who disagrees with us gets nuked. By this time, china and russia will hive gotten angry enough at us to declare war. Involve the rest of NATO, promising defense against nukes if they help. Using nukes, win the war within months. Stage a minor alien invasion. Using the imagined threat of aliens, increase American power and either annex of nuke every other country on earth to stop the fake invasion. Build FTL drives (they are possible http://en.m.wikipedia.org/wiki/Alcubierre_drive ) and colonize Mars, the moon, nearby super-earths, etc. By the time aliens actually do find us, the US will own everything and we'll be a formidable threat on the galactiv scale, and maybe eventually even the universal or even multi-dimensional level.
Remember- this is the humor section. Self consistent plans are, however, funnier than insane ones