The accusations that the report has been buried will also infuriate the UK's EU partners and could make the job of renegotiating this country's terms of membership far more difficult for Cameron, if he wins the election, as it will be known in other European capitals that the London civil service believes there is no real case for repatriating powers.
Cameron has promised to hold an in/out referendum by the end of 2017, having renegotiated the UK's terms of membership by repatriating powers.
He talks of repatriating Europe's powers to Westminster, but what he means is stripping us of the EU workplace rights, consumer protection and environmental standards that most of his backbenchers hate.
In a direct challenge to the prime minister, who is pledging to hold the poll after repatriating a raft of powers from the EU by the end of 2017, Clarke said Britain should focus on the positive benefits of the EU.
The talks have been going on since October when the home secretary, Theresa May, told the Commons of the government's intention to exercise Britain's mass opt-out of police and criminal justice measures agreed between the 1992 Maastricht treaty and the 2007 Lisbon treaty under the banner of "repatriating British powers from Brussels".
The firm estimates that $1.1 trillion (or 64%) of the total is being held abroad, a 16% increase on the previous year, as companies choose to take advantage of cheap borrowing costs at home to fund their spending, rather than face the tax bill when repatriating profits.
Companies in Europe have traditionally begun rationalisation farthest from home, by lopping off their branch factories and repatriating production to save domestic jobs.Belgian demonstrators at Renault's French factories are trying to whip up support and sympathy strikes.
Asset recovery is a slog, studded with obstacles that range from the deviousness of those hiding the money to the clunkiness of the international legal framework for identifying, freezing and repatriating looted wealth.
Many large companies are quietly following the well-publicised example of Apple by issuing debt to fund dividends or buy-backs rather than repatriating cash held overseas that would trigger large tax payments.
And last week China allowed a North Korean family that had taken shelter in the United Nations refugee agency's office in Beijing to leave the country and make their way to South Korea, instead of repatriating them as it normally does.Yet giving China the games can hardly be expected to ensure a consistent easing up over the next seven years.
Meanwhile, officials say that investment will come from Argentines' repatriating capital to supply buoyant domestic demand.The trellis underpinning such rosy reckonings is a booming world economy awash with cheap money.
