In 1980, Rabbi Kahane formed the Kach political party in Israel and in 1984 was elected as a Member of the Knesset. He refused to take the standard oath of office upon his election and insisted on adding a verse from the Book of Psalms (Tehillim) to indicate that when secular laws and Torah conflict, Torah law should have supremacy over the laws of the Knesset.
Rabbi Kahane's legislative proposals focused on transferring the hostile Arab population out of Israel, revoking the Israeli citizenship of non-Jews and banning Jewish-Gentile marriages and sexual relations, based on the Code of Jewish Law compiled by Maimonides.
As Rabbi Kahane's message continued to strongly resonate with the Israeli population, the Central Elections Committee banned him from being a candidate on the grounds that Kach was a racist party.
although Rabbi Kahane was condemned by the Jewish establishment while was alive, "Everyone in Israel knows that Kahane was right.”