"The EPA’s yearslong, tenuous effort to ease air pollution limits on trucks with rebuilt engines can be traced back to a day early in Scott Pruitt’s tenure as administrator.

Just two months on the job, Pruitt was handed a memo at a “meet the Cabinet” event from former Rep. Diane Black (R-Tenn.), then chairwoman of the House Budget Committee, urging him to undo the Environmental Protection Agency’s limits on “glider kits"—new truck chassis and cab assemblies built for used engines and transmissions.

A week later, Aaron Ringel, deputy associate administrator for the EPA’s Office of Congressional Affairs and Intergovernmental Relations, asked aides in Black’s office for electronic copies to send to the agency’s policy officials."

Abby Smith reports for Bloomberg Environment March 18, 2019. [2]