With federal surpluses sliding into deficits, some Democrats have suggested that the tax cuts -- many of which have not yet gone into effect -- be repealed or delayed.

CNN: Bush team echoes president's tax remarks

After the runways were closed for de-icing, the airport extended the length of time between flights for safety reasons, primarily because there was a knock-on effect of flights being delayed at other airports.

BBC: Heathrow cancels flights and transport is delayed by snow