The dollar is rising once more because Fed chairman Ben Bernanke has announced QE3. He will be printing an additional $US40 billion per month to buy MBS. The reasoning of markets goes that this will debase the US dollar so it therefore sells US dollars, and buys ours.
But in truth, $US40 billion is not a lot of money nor a persuasive debasement of the currency at all. QE1 was $US1.5 trillion. QE2 was $US600 billion. Moreover, and here's the real point, the $US is so completely dominant in global currency trade that it turns over some $US3.6 trillion per day.
While we're not supposed to compare a stock (amount of dollars in circulation) with a flow (the turnover of those dollars), the discrepancy in the comparison is so vast that it gives you an idea of just how paltry the Fed's efforts really are.
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