[NonValueAdded]

However, the prospect that the US Treasury could pay for UK banks’ bad assets is likely to infuriate some American politicians and taxpayers, who would foot the bill.

No $hit, Sherlock, and infuriate is too mild of a word choice.

[Vanders9]

If the US treasury is going to effectively write off these debts, and some of those debts are held by foreign banks,then why should those foreign banks not claim in exactly the same way that US banks will?

Besides, this works the other way round too. The UK government has already bailed out one bank, and negotiated a merger between two others (probably illegally) in order to prop them up. No doubt some US investments have been shored up by those measures.