Several of the biggest departments in the federal government plan to adhere to the White House prohibition on lobbyists serving on their advisory boards and committees.
The Hill contacted all 20 Cabinet-level agencies to see if they intend to follow the guidance issued two weeks ago by the White House.
Twelve agencies returned messages before press time and all said they would adhere to the guidelines.
A spokesman for the Defense Department said that it plans to stick to the guidance but is reviewing how best to implement it for now.