The summary of this prophecy is, because of how absolutely vile, corrupted, and evil Washington, DC is, with its streets and halls of leadership filled with the blood of the innocent, God is going to move the US captial to a whole other location in the USA.  Some have proposed New York, Manhattan, and some other places.  There's even a new White House in Colorado State, hinting that it might be moved there.  However, an exact location won't be known until the move happens.  We only know at this time that it will be moved to a new location in the USA.  As to what will happen to the old one when that move happens, that's not known at this time.