"America has indeed been about ideas, but America is now and has always been about more, much more than abstract ideas." ???
In the analls of human political history, how much more abstract ideas can there be than "We the People" or "We hold these truths to be self evident"? America exactly is an abstract idea, that when put into practice with a moral God fearing attitude, leads to prosperity and opportunity never before seen. And if we think that only America is worthy of these ideas, then we make those ideas nothing more than the whims of man, and therefore little more than worthless.