July Wiener writes about how financial constraints and declining affiliation rates are bringing virtually every national Jewish institution, and many local ones, to restructure, redefine its mission, merge or even close. In the latest sign of the times, this week the board of the Jewish Education Service of North America (JESNA) — which has downsized dramatically in the past four years — announced it is considering merging with the Jewish Education Project, a New York organization that is itself the product of a 2010 merger.