Has the US ever rationed gas before?
Yes. Gas rationing was implemented during the 1973 OPEC oil embargo (odd/even license plate days) and briefly considered during the 1979 Iranian Revolution oil crisis. Before that, WWII had comprehensive fuel rationing.
How would gas rationing work?
If implemented, rationing would likely follow the 1973 model: odd/even license plate days, gallon-per-fill limits, and priority access for essential services. The Department of Energy has standby rationing plans.
Which states are most at risk of fuel shortages?
Hawaii (100% imported fuel), Alaska (isolated supply chain), California (limited pipeline from Gulf Coast), and Northeast states (dependent on waterborne deliveries) are most vulnerable.