The US authorities have no money to fulfil their ambition of stopping large US banks from failing without taking them into public ownership. The $300 bn left in the TARP kitty is all that is available for recapitalising banks, purchasing toxic assets and providing other financial support. Congress has thrown its toys out of the pram and is unwilling to appropriate more funds for the rescue of the banking sector.
As an aside: it is astonishing that Congress and much of the US populace are apoplectic about $165 mn (perhaps $182 mn) of bonuses paid to AIG executives and employees, when $170 billion or so of public money is at risk (and tens of billions probably already gone out of the window) in the rescue of this most undeserving of companies. Perhaps you can only get indignant about what you can comprehend… .
The US authorities are reduced to begging, stealing and borrowing the rest of the funds they believe they will need. The two main proximate sources of funds are the FDIC and the Fed. The ultimate sources of funds will be (1) the US tax payer and the beneficiaries of future US spending programs that will have to be cut, (2) the holders of nominally denominated liabilities of the US state, including the monetary liabilities of the Fed and US Treasury bills and bonds.
Owners of dollar-denominated debt instruments will see the real value of their claims on the government eroded by future inflation if, as I expect, the recent and prospective future increases in the US monetary base (driven by credit easing and, in the future also be quantitative easing) cannot be reversed in the future. The main obstacle to such a reversal will be the US fiscal authorities, who are unlikely to let the Fed dump large amounts of US Treasury debt, acquired by the Fed as part of its quantitative easing program, into the markets.
I believe that the raids by the US Treasury on the FDIC and on the Fed are illegitimate and, in the case of the FDIC, quite possibly illegal.