There has even been speculation that the Treasury would take direct control of the process.
As a result, the Treasury is taking the position that the Secretary has broad discretion.
In the past, the Treasury has often taken such steps to buy time for a few days.
They could probably even agree on the need to get the Treasury to take its tanks off their lawn.
The Treasury took £85-90m in revenues, with an outlay of £110m a year.
"The Treasury is taking this very seriously," said one official who asked not to be identified.
He estimated that the additional Treasury take might be from $1.5 billion to $2.5 billion.
The Treasury could take a greater interest in the City's fortunes.
He also said that the Treasury was taking a conservative approach with its third-quarter borrowing plans.
Sensing a storm, the Treasury has taken the customs ruling under review.