This is merely the beginning of a full-scale investigation by the commission that could last months, if not years, and could, in theory, lead to a fine of up to 10% of the company's sales.

ECONOMIST: Soft drinks: Coke is hit, again | The

Shadow home secretary Yvette Cooper said the investigation was "beyond the scale of anything the IPCC has done before" and required powers, such as compelling former and serving officers to be interviewed, which it did not have.

BBC: Hillsborough: 1,444 police names passed to IPCC

About 60 percent of people surveyed said the campaign finance flap requires a full-scale federal investigation and 56 percent felt a special counsel, rather than the Justice Department, should do the probe.

CNN: AllPolitics - Pressure For A Meeting