WASHINGTON – Democrats are eagerly renewing their fight against privatizing Social Security now that Republican presidential candidate Mitt Romney has picked Paul Ryan as his running mate. It was a fight that didn't go well for the GOP when President George W. Bush pushed the idea in 2005.

In his 2010 "Road Map for America's Future," the Wisconsin congressman proposed a plan to allow younger workers to divert more than one-third of their Social Security taxes into personal accounts that they would own and could will to their heirs.

Ryan wrote that the accounts would provide workers an opportunity "to build a significant nest egg for retirement that far exceeds what the current program can provide." Workers 55 and older would stay in the current system.