Here is a link regarding the dollar.
Things that make you go humm.. Why did Fed Chairman Bernanky back away from his charge that China was keeping the Yuan artificially low at the expense of the American worker? Let’s see. China has massive currency reserves, that if they decided to sell would cause the dollar to plummet. Usually the U.S. could defend its currency by buying up these dumped dollars and thus insulate us from a big currency drop. But, with the U. S. running record budget deficits, as a result of poor tax policy and profligate spending (think earmarks and Iraq) we are in no position to defend our currency. Thus, because of poor economic policy we are at the mercy of China. How is that for this administration "keeping America safe?"