what would be the downfall of this country

A few weeks ago a friend of mine asked me what I thought would be the downfall of this country.
I answered "The Economy."
I'm not sure anymore.
The more I think about it, I feel it is the attitude taking over the country, and specifically Washington D.C., of "My way or the highway."
As long as comprimise takes a back seat in politics, I feel we are collectively fucked as a country.