The federal government has embarked on a troubling regulatory path, with the goal of making energy use and lifestyle choices on behalf of American families and businesses. Since the 1970s, Congress has empowered agencies to micromanage Americans’ energy use and override personal preferences through energy-efficiency mandates. With ever-shifting goals to forestall ostensibly imminent resource exhaustion, stimulate economic recovery, or reduce global warming, the regulations are as unnecessary today as they were four decades ago.