Would it be profitable for them to source additional liquidity abroad, as domestic interest rates rise? Should they do so, would the  1  Beinhocker, Eric D. The Origin of Wealth: the Radical Remaking of Economics and What it Means for Business and Society, Harvard Business School Press, 2006, 2007.
I see that Financial Transactions Taxes are being discussed again, though I suspect that the conclusion will be that they do little for improving the efficiency or safety of the financial system (they would have done nothing to discourage derivatives related to sub-prime lending, for example), and also would not generate as much revenue as some suppose.