Emory Law Journal


In 2017, Congress passed major tax legislation at warp speed. After enactment, it fell to the Treasury Department to write regulations clarifying and implementing the new law. To assure democratic legitimacy in making regulations, administrative law provides that an agency must issue a notice of proposed rulemaking, followed by an opportunity for the public to comment (so-called “notice and comment”). But, after the 2017 tax overhaul, many sophisticated actors did not wait until the issuance of a notice of proposed rulemaking to comment, instead going to the Treasury Department immediately with comments designed to influence the regulations. In this Article, we examine empirically this phenomenon of post-enactment commenting by studying the making of the Internal Revenue Code Section 199A regulations—some of the most important regulations implementing the 2017 tax reform. We examined the inputs into the regulatory process from legislative enactment through the regulations’ finalization. We find extensive engagement by sophisticated parties and industry groups prior to the official notice-and-comment period, which helped shape and anchor rulemaking outcomes. Subsequent comments submitted in the official notice-and-comment period led to technical and other discrete changes but did not fundamentally change the initial rulemaking approach. Throughout the rulemaking process, there was little direct, public-interested engagement.