Depends on what you mean by "falls". There's certainly a lot of ways the US can "fall" because when you are at the top there is only one direction to go -- and that is down. If "the fall" is due to mostly economic factors such that the US is no longer considered to be a world-dominating superpower, then that is not horrible for US Americans.
However, if "the fall" is due to environmental catastrophe, limited (or major) nuclear exchange with another country, or possibly nuclear terrorism, then we're talking about a much worse type of "fall". Such a fall would have much more dire consquences than simply falling behind other countries economically or technologically.
What I guess I'm trying to say is, it's important to consider if the fall is a "whimper" or a "shriek". Considering the US political landscape these days it seems the US would not likely to go out with a whimper if at all possible and are willing and capable making war (preventative war) to maintain power. And, of course, such behavior would tend to lead the US (and possibly other countries, or even all of civilization) to falling in a "shriek" of nuclear and/or environmental catastrophe.
But then, as remote of a possibility as it is, US politics may not factor into the fall if that humongous super-volcano under Yellowstone National Park blows up. When it blows it will destroy whatever government is in power in North America. In fact that bastard has the potential to decimate most all of human civilization across the planet. Not only destroy human civilization but destroy most all life by plunging us into a mass-extincting dark cold winter. Sounds crazy, but it will definitely blow at some point in time and there is no stopping it. Oh well...
However, if "the fall" is due to environmental catastrophe, limited (or major) nuclear exchange with another country, or possibly nuclear terrorism, then we're talking about a much worse type of "fall". Such a fall would have much more dire consquences than simply falling behind other countries economically or technologically.
What I guess I'm trying to say is, it's important to consider if the fall is a "whimper" or a "shriek". Considering the US political landscape these days it seems the US would not likely to go out with a whimper if at all possible and are willing and capable making war (preventative war) to maintain power. And, of course, such behavior would tend to lead the US (and possibly other countries, or even all of civilization) to falling in a "shriek" of nuclear and/or environmental catastrophe.
But then, as remote of a possibility as it is, US politics may not factor into the fall if that humongous super-volcano under Yellowstone National Park blows up. When it blows it will destroy whatever government is in power in North America. In fact that bastard has the potential to decimate most all of human civilization across the planet. Not only destroy human civilization but destroy most all life by plunging us into a mass-extincting dark cold winter. Sounds crazy, but it will definitely blow at some point in time and there is no stopping it. Oh well...