Maimonides and other medieval commentators suggested that, although the line of semikhah (Biblical ordination) from Moses had been broken in 425 CE., if the sages in the land of Israel agree upon a single candidate being worthy of semikhah, that individual would have semikhah, and could then grant it to others, thus enabling the re-establishment of the Sanhedrin According to the new Sanhedrin's website, was explained by Rabbi Dov Levanoni, a member of the new Sanhedrin.
It was formed with the best scholars available, with the public announcement every one of them has agreed to step aside the moment a more deserving candidate should step forward.
Lastly, the Nasi has indicated that the Beis din would wait until the best scholars of Eretz Yisroel were represented on the Beis din before beginning to fully function halachically as the Sanhedrin of old." In October 2004, a group of over few hundred rabbis representing varied communities in Israel undertook a ceremony in Tiberias, where the original Sanhedrin was disbanded, with about one hundred of them at the time having proper Semicha.
The 12th century scholar, Maimonides, discussed the seeming incompatibility of the essential requirement of Jewish Law for a Sanhedrin, and the inability to form one due to the loss of semikhah.
In his magnum opus, the Mishneh Torah, he proposed a procedure to re-establish a Sanhedrin.
Rabbi Halberstam served at the President of Hatzolah Israel.
He was also the Rabbi of the Shaarei Tzedek Hospital in Jerusalem.
Former Ashkenazi Chief Rabbi and Rosh Yeshiva of Merkaz Ha Rav Kook Rabbi Avraham Shapira chose to abstain on the issue but also refused to discourage it.
Rabbi Halberstam (April 1, 1932–April 26, 2006), who was selected to receive Semicha by consensus, was a relatively well known figure and widely respected.
This later became the subject of legal rulings by Rabbi Jacob Berab, Rabbi Yosef Karo and others.
There have been several attempts to implement Maimonides' recommendations.
The website also claims that leading sages have supported the semikhah directly, indirectly or abstained, and specifically mentions these names: Rabbi Yosef Shalom Eliashiv, Rabbi Ovadia Yosef, Rabbi Zalman Nechemia Goldberg and many others gave their blessing but did not join the Sanhedrin.