Besides overspending being a real issue: The debt is now so high that it is outstripping the secured assets to cover it many times over. This is the same issue that the investment banks found themselves in. Leveraging capitol always has had dire end consequences.
When it all comes home to roost the whole political machine will claim they didn't see it coming.
Well the banks got in trouble by following the Governments wish for everyone to own a home. When you lend $300,000 to a person with questionable credit on a house that's worth $150,000 things wont turn out well.
