EPA: Panel probes whether agency officials are 'obstructing' its IG Robin Bravender, E&E reporter Published: Monday, May 5, 2014 House lawmakers are investigating whether U.S. EPA officials are obstructing the work of the agency's in-house watchdogs. Please subscribe to E&E Daily to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.