In June 2008 amidst an energy crisis and the highest gas prices since the Carter years (not counting the few days after Katrina), President Bush an executive order banning new U.S. offshore drilling. Three months later, a federal moratorium on OCS drilling was allowed to expire by Congress for the first time since the Regan administration. A ban on shale oil was allowed to expire, as well.
Now, the Obama administration and the Democrat Congress, both of whom pay lip-service to making America more energy independent, are seriously considering once again legislating utter American dependence on foreign countries like Venzuela and Saudi Arabia.