I don't know how this will be: hurricanes, earthquakes, floods, internal wars, epidemics ...etc.
This is because they pretend not agreeing about burning the book of the Quran, while they in fact do not prevent such men from committing their transgression on the book of God: the Glorious Quran.
If some persons intend to burn the Gospel, will Muslims allow this in their countries? No, of course; because Muslims believe in the Torah and the Gospel as do they believe in the Quran.
Therefore, if the American government is truly against this act of this clergy, then they have to prevent him or else they will share in the wrath of God that they will incur.
The Quran is the book of God and He Himself will defend His book.
The Ten Commandments In The Quran (external - login to view)