Every president since Richard Nixon has vowed to reduce the United States’ dependence on foreign oil. None has succeeded. Imports—and thus America’s vulnerability to disruptions—have increased to where now they supply two-thirds of consumption. As former Secretary of State George Schultz asked: “How many more times must we be hit on the head by a two-by-four before we do something decisive about this acute problem?”

Our aim should not be total independence from foreign sources of petroleum. That is neither practical nor necessary in a world of interdependent economies. Instead, the objective should be developing a sufficient degree of resilience against disruptions in imports. Think of resilience as the ability to absorb a significant disruption, bigger than what could be managed by drawing down the strategic oil reserve.

Our resilience can be strengthened by increasing diversity in the sources of our energy. Commercial, industrial, and home users of oil can already use other sources of energy. By contrast, transportation is totally dependent on petroleum. This is the root cause of our vulnerability.

Our goal should be to increase the diversity of energy sources in transportation. The best alternative to oil? Electricity. The means? Convert petroleum-driven miles to electric ones....