The recent margin hikes in silver have been 'successful' if the intention was to beat down evil speculators with the naughty stick... Buoyed on by their initial success in silver (20%+ drop so far from highs in less than a week), does this now raise the serious possibility of the grand plan being extended to other commodities, likely targets being oil, and then the range of food commodities, such as wheat, corn, soybeans, cocoa, coffee,..? It would help Bubble Ben ward off inflation, for one, so I'm sure he'd be a fan. Of course, the 'unintended consequences' will loom large in the future, but hey, when did that ever stop a short sighted politician? And would a sudden scramble to meet margin calls by hedge funds and pay for rapidly deteriorating long term commodity positions ultimately lead to waves of selling in stocks and bonds? Nixon's price controls were an abject failure in the 1970s. Will Obama's anti-speculation measures suffer a similar fate?