Niall Ferguson made the case that A Greek crisis is coming to America:

On reflection, it is appropriate that the fiscal crisis of the west has begun in Greece, the birthplace of western civilization. Soon it will cross the channel to Britain. But the key question is when that crisis will reach the last bastion of western power, on the other side of the Atlantic.

Nonsense, responds Paul Krugman. Greece or Spain are more analogous to Florida - The Federal government bails them out.

Now, if Spain were an American state rather than a European country, things wouldn’t be so bad. For one thing, costs and prices wouldn’t have gotten so far out of line: Florida, which among other things was freely able to attract workers from other states and keep labor costs down, never experienced anything like Spain’s relative inflation. For another, Spain would be receiving a lot of automatic support in the crisis: Florida’s housing boom has gone bust, but Washington keeps sending the Social Security and Medicare checks.

But Spain isn’t an American state, and as a result it’s in deep trouble. Greece, of course, is in even deeper trouble, because the Greeks, unlike the Spaniards, actually were fiscally irresponsible. Greece, however, has a small economy, whose troubles matter mainly because they’re spilling over to much bigger economies, like Spain’s. So the inflexibility of the euro, not deficit spending, lies at the heart of the crisis.

Of course, the rich Europeans do not wish to bail them out. That, writes Krugman, is the real problem.

Yes, but who will bail out the US? China?