It allowed countries lucky enough to have a boomerang currency to disregard the internal consequences that would have resulted from a balance-of-payments deficit under the gold standard.
They make much of the finding that capital is draining from America to the third world, and of the fact that recently America has run a deficit in its balanceofpayments.
As such, recent trends in trade flows and the balanceofpayments suggest that the current account deficit for this fiscal year will likely reach a record of about 5% of GDP before narrowing closer to 4% next year.