If Joe Biden is elected President there will be significant changes in environmental regulation for American businesses. Some changes can (and likely will) take place very quickly, with the stroke of a pen. These could include revocation of certain EPA directives and guidance documents and many of President Trump’s Executive Orders – such as his October 2019 Orders limiting the ability of agencies to regulate through guidance and his January 2017 Orders requiring federal agencies to streamline the environmental permitting process. Other changes will require rulemaking under the Administrative Procedures Act (APA) or legislation by Congress.