America's regimes have always had ulterior motives for their militaristic imperialism that has led over the course of her history to the deaths and sufferings of millions, with one-half or more on average being noncombatant fatalities.  Today, most of the world's inhabitants see America as the greatest threat to world peace. 
America is paying a heavy price to indulge her addiction to warring with a much heavier price yet to come unless and until she starts making friends instead of enemies on foreign soil. I call that heavier price "a different D-Day." It means "doomsday," and it will very likely show itself in the decades to come in one or more of these different forms; a nation beyond a failed state, armed revolution, escalating blowbacks, Armageddon, and other global calamities. They are not necessarily sequential. Some or all of them might happen at about the same time. Let's briefly look into the future at each of them.
Failed State and Beyond
The NGO, Fund for Peace (FFP), regularly ranks the nations of the world on its "failed state index."  Over 100 nations are put into the "alert" and "warning" categories. That the U.S. is not among them is to be expected since its biggest funders are the U.S. federal government, corporations, and foundations.
Putting the FFP's list aside, I believe there is ample evidence summarized in the list of "sadtistic" below to suggest that America is indeed a failed state or close to becoming one.
" Corpocracy instead of democracy
" Endless wars and other military interventions