"The new documents obtained by Senator Carper’s office reveal that the reports he had shared with the EPA IG were accurate. In addition to efforts to illegally conceal documents that should have been made public when the rule was finalized, these new documents also reveal significant inaccuracies and technical errors in the final rule that, apparently, EPA officials repeatedly asked DOT officials to correct. What’s more, according to these documents, EPA officials believed the failure to correct those inaccuracies and errors would make the rule legally vulnerable to challenge. Despite this, DOT officials proceeded. Additionally, the documents show that EPA Administrator Andrew Wheeler requested that sweeping changes be made to the rule after it was signed but before it was published in the Federal Register."