Editing Yisrael Jacobson (section)

===Public Service===
As mentioned, already in Russia he was appointed by [[Joseph Isaac Schneersohn|Rabbi Yosef Yitzchak Schneersohn]] as the [[mashpia]] of the Chabad community in Gomel, Russia. After arriving in the United States, he was appointed to the board of [[Agudas Chasidei Chabad]] and after the death of the president Morris Kramer, he was appointed in his place.

Under the directive of Rabbi Yosef Yitzchak, he established the '[[Agudas HaTmimim]]' with the following goals: a: Uniting Chabad Hasidim in the United States who until then were not organized as a community. b: Establishing classes in [[Hasidic philosophy]]. c: Advocacy for Chabad Hasidim who remained in Europe and needed assistance. d: Advocacy and fundraising for Rabbi Yosef Yitzchak and his institutions.

After Rabbi Yosef Yitzchak's release from imprisonment, he assisted him in his efforts to leave Russia, mainly by sending him sums of money. In [[1932]], he established the "Achei Tmimim" [[yeshiva]] in New York for young Jews who were becoming close to Chabad at that time. In [[1939]], he traveled together with some yeshiva students that he influenced to [[Poland]] to integrate them into the [[Tomchei Tmimim Yeshiva]] in the city of Otwock. With the outbreak of [[World War II]], these yeshiva students fled back to the United States and later were the first students of Central Tomchei Tmimim Yeshiva. 

At that time, Jacobson helped Rabbi Yosef Yitzchak, who remained in [[Poland]], to escape to the United States. Among other things, he helped him obtain an entry visa to [[Latvia]] (from there Rabbi Yosef Yitzchak flew to Sweden and from there sailed by ship to the United States). Upon Rabbi Yosef Yitzchak's arrival in the United States, he established the [[Central Tomchei Tmimim Yeshiva]] there and appointed Jacobson as a board member and [[mashpia]] in the yeshiva. In [[1941]], Jacobson assisted in obtaining entry visas to the United States for [[the Rebbe]] and [[Chaya Mushka Schneerson (wife of the Rebbe)|Rebbetzin Chaya Mushka]]. He also tried, unsuccessfully, to obtain entry visas for Rabbi Yosef Yitzchak's second daughter - [[Sheina Horenstein|Sheina]] and her husband [[Menachem Mendel Horenstein]]. In [[1944]], he established several branches of the central yeshiva in several cities, including Pittsburgh, New Haven, and the Bronx borough (where his son-in-law, Rabbi [[Mordechai Dober Altein]], served as the [[Rosh Yeshiva]]).

After the Rebbe Rayatz passed away, he was influential in the matter of the [[acceptance of leadership by the Rebbe|the Rebbe accepting the leadership of the Chabad community]].