The Obama administration created the United States Digital Service to be a uniquely nimble organization. Elon Musk is exploiting that feature to test the limits of U.S. law. When Barack Obama created the United States Digital Service in 2014, it was meant to disrupt the arcane tech processes that had led to catastrophes like the original HealthCare.gov rollout. A team of young, private sector workers had been able to come in and fix the site — why couldn’t they be deployed throughout the government to modernize an arcane tech infrastructure? The launch of USDS was met with deep skepticism from...