While this is not a precisely transferable prophecy, it does outline a pattern of human events. If God blesses you but then you forsake your faith in the One who blessed you, then you will also lose the blessing. America let itself get bullied from within and without into becoming lukewarm about its biblical faith.
Ohio is O 49.2 R 49.1 (80% reporting) so how can they call it for Obama?
As to transferable prophecy to the USA, I guess that depends on the whether or not one considers Deuteronomy 28 applicable to "God's people".
Clearly this was a prophecy for Ancient Israel - and of course their fate followed exactly as warned once they abandoned God.
If one considers Christians "God's People" - then it would follow that Deuteronomy would also apply to them, considering God says he is the same yesterday, today and forever, and John 1:1-3, 14 spell out Who it was that actually created and did the speaking for Adonai. Not by bread alone but every Word of God notwithstanding.
So too, consider our national patriarchs, who had no trouble understanding how God saw this land and this people. (John Cotton's prayer for the Mayflower Pilgrims actually proclaims them to be "Spiritual Israelites).
What Deuteronomy 28 outlines for a people who abandon the God Whom blessed them, is utter and total destruction for the entire nation.
I believe we are just beginning the curses outlined in those verses. And perhaps, as II Chronicles 7:13-14 tell us, after we are chastised, IF HIS PEOPLE whom are called by HIS NAME, humble themselves, repent and TURN FROM THEIR WICKED WAYS - then, THEN, will God hear from Heaven, forgive us our sins and heal our land.
And perhaps part of that healing could be from the damage a Marxist tyrant and the legion of fools that made him their prince and their god, wreak across the nation.
But only IF this people do verse 14. If the church itself refuses to advocate it - then I do not put much hope in the nation doing it.