June Walker, national president of Hadassah, was tapped to chair the Conference of Presidents of Major American Jewish Organizations. The conference’s Nominating Committee named Walker to succeed Harold Tanner, beginning June 1.Tanner said he was “delighted” with the committee’s choice. Walker “has been a longtime leader and is highly conversant in the issues facing the Conference of Presidents. She has been an outstanding leader with one of the largest and most important organizations. She is well known in the U.S., Israel, and Jewish communities abroad,” Tanner said in a statement released by the group Monday.The nomination will be voted on by the conference’s 50 member organizations.