Last year, Trump exempted more than 180 facilities in six industries from updated hazardous air pollution rules. The power of courts to review and declare executive action unlawful “reflects a long history of judicial review of illegal executive action, tracing back to England. President Trump’s Clean Air Act ExemptionsThe Clean Air Act exemptions are drawn from the same playbook. Kevin M. Stack, The Statutory President, 90 Iowa L. Rev. Courts have and must use their authority to enforce limits on the president’s authority.