Top aide to embattled EPA chief Scott Pruitt steps down
Scott Pruitt, administrator of the Environmental Protection Agency (EPA), speaks to employees of the Agency in Washington, U.S., February 21, 2017. REUTERS/Joshua Roberts

A top aide to the embattled Environmental Protection Agency head has resigned.

Samantha Dravis, associate administrator of the EPA's office of policy, has stepped down from her position amid an ethics scandal involving EPA administrator Scott Pruitt, according to CNN reporters.