We previously wrote about this case last January, here and here, when Iowans for Alternatives to Smoking & Tobacco, Inc., Global Source Distribution, LLC, and others filed a complaint and motion for a preliminary injunction in federal district court against the Iowa Department of Revenue (the Department), challenging Iowa House File 2677 (HF 2677), a law imposing certification and directory requirements on vapor products sold in Iowa. On May 2, the court granted plaintiffs’ motion for p...