What’s a financial advisor to do? On March 15, 2018, the Fifth Circuit Court of Appeals in Chamber of Commerce of the U.S. v. U.S. Dep’t. of Labor, No. 17-10238, 2018 U.S. App. LEXIS 6472 (5th Cir. Mar. 15, 2018) vacated – thereby invalidating – a series of seven rules (which we collectively refer to in this post as the “fiduciary rule”) issued in April 2016 by the Department of Labor (DOL). The fiduciary rule vastly expanded the reach of the ERISA fiduciary standards that apply to individuals and entities providing investment advice. This post first explains the state of the law prior to the fiduciary rule; it then discusses the impact of the rule on the arguments that the Court grappled with; and it concludes by handicapping the options available to regulated financial advisors and institutions as they endeavor to respond.