The recession, which officially ended in June 2009, had a delayed effect on states and school districts.

WSJ: Study Weighs Recession Toll

The other is a delayed effect that sees the other roughly 50% working its way through ground aquifers before washing out into the Thames.

BBC: Thames archive reveals long nitrate rise

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

Labour MPs tabled an amendment which called for the changes to business rates to be delayed by a year so they would not come into effect until 2014.

BBC: Business rate changes 'rushed through', Labour claims

Of course, the effect of increased imprisonment could have been delayed, producing a lower crime rate in subsequent years.

ECONOMIST: Prisoners

Neither a 2 percent hike in Social Security payroll taxes that took effect in January, nor delayed federal income tax returns this year appeared to blunt borrowers' ability to manage their debt.

NPR: Average Credit Card Debt, Late Payments Fall In 1Q

Has he merely delayed a move long backed by many Democrats as plain common sense so he can deploy it to maximum effect, months away from an election?

BBC: Immigration makes election bow

When Congress delayed until December 17 making changes to the 2010 tax rules affecting millions of filers, it caused a ripple effect on the entire annual tax filing ritual.

FORBES: Filing Season 2011 Finally Begins