Wemustinsist on this, not simply because the rest of the world would benefit, but because the U.S.' own security and prosperity depend on it to an extent that is by no means minor.
Given that such speculation produces exactly the result that we desire, more food for people to eat, why do these people insist that wemust have less of what saves lives?
And yet large parts of the green (and Green) movement insist that wemust fight climate change by reversing globalisation, by moving back to local and regionally based economies.
In fact, from a macroeconomic point of view, we might say that this would be the very worst time possible to insist that the banks must halve the amount they can lend out.