Probably the same FISA judge that Strzok and Page thought they had in their pocket.
Was that judge ever named?
Here are the current FISC judges:
Rosemary M. Collyer (Presiding)
James E. Boasberg
Rudolph Contreras
Anne C. Conway
Raymond J. Dearie
Claire V. Eagan
James P. Jones
Robert B. Kugler
Michael W. Mosman
Thomas B. Russell
John J. Tharp, Jr.
Current Membership-Foreign Intelligence Surveillance Court
Maybe one of those names will show up as visiting Obama in the White House during the pertinent time via White House logs.