European debt bailout.

The US exposure to the European debt bailout could be at least $50 billion, but the chance of taxpayers actually being on the hook for that appears remote. Determining the exact amount of exposure is nearly impossible until governments start stepping up to the window created by the European Union and the International Monetary Fund to stem the crisis in Greece and elsewhere on the continent. But one rule-of-thumb formula puts potential US exposure at $54 billion should the entire IMF loan fund be tapped.Link