Chuck Grassley is chairman of the Senate finance committee..

( https://www.washingtonpost.com/news/energy-environment/wp/2017/10/06/epa-inspector-general-expands-investigation-of-pruitts-use-of-military-private-flights/?utm_term=.bd489676cde0 )

The Environmental Protection Agency’s inspector general acknowledged plans Friday to expand its inquiry into Administrator Scott Pruitt’s travel habits, marking the latest Trump Cabinet member to face scrutiny from his own agency for taxpayer-funded trips.

The move came after recent disclosures that Pruitt had taken at least four noncommercial and military flights since mid-February, costing taxpayers more than $58,000 to fly him to various parts of the country, according to records provided to a congressional oversight committee and obtained by The Washington Post.

The EPA inspector general’s office announced in August that it had opened an inquiry into Pruitt’s frequent travel to his home state of Oklahoma. The internal watchdog at the time said its investigation was triggered by “congressional requests and a hotline complaint, all of which expressed concerns about Administrator Pruitt’s travel — primarily his frequent travel to and from his home state of Oklahoma at taxpayer expense.”

bye bye.. and good riddance..  He's been warned more than once.. time to show Scott the door.