An ethics group is calling on all senators to release the names and dates of their meetings with ambassadors over the last three years in the wake of the firestorm over Attorney General Jeff Sessions’ discussions with the Russian ambassador last year that he did not disclose during his confirmation hearings.

The Foundation for Accountability and Civic Trust’s Matthew Whitaker, a former U.S. attorney appointed by President George W. Bush, is defending Sessions against charges he should resign or further recuse himself and wants to put the news of Sessions’ meeting with the Russian ambassador in the proper context.