On July 20, 2017, four environmental groups filed five lawsuits in the U.S. District Court for the District of Columbia, alleging that EPA failed to prevent the Texas Commission on Environmental Quality from granting improper major source permits under the Clean Air Act to several petroleum refineries and power plants. Specifically, the lawsuits allege that the permits issued by TCEQ contain “unenforceable . . . loopholes” that do not comply with the Clean Air Act. The cases are Envtl. Integrity Project et al. v. Pruitt, Nos. 1:17-cv-01439, 1:17-cv-01440, 1:17-cv-01442, and 1:17-cv-01443 (D.D.C. filed July 20, 2017).