Rubuta ci gaba don wannan sakin layi - A cikin 1968, Kahane yana ɗaya daga cikin waɗanda suka kafa Kungiyar Kare Yahudawa (JDL) a Amurka. A shekara ta 1971, ya kafa Kach ("Saboda haka"), sabuwar jam'iyyar siyasa a Isra'ila. A wannan shekarar, an yanke masa hukunci a New York don yin makirci don kera abubuwan fashewa kuma ya sami hukuncin kisa na shekaru biyar. A Isra'ila, an yanke masa hukunci ne saboda shirya fashewar ofishin jakadancin Libya a Brussels a matsayin ramuwar gayya ga kisan gillar 'yan wasa 11 na Isra'ila a wasannin Olympics na 1972 a Munich, inda aka dakatar da hukuncin da aka dakatar da shi. A cikin 1984, ya zama memba na Knesset, lokacin da Kach ya sami kujerar ta kawai a cikin zaɓen majalisar. Kahane ya yi watsi da shi a duk faɗin Knesset, kuma sau da yawa zai yi magana a gaban ɗakin da babu kowa. Hakanan Hukumar Watsa Labarai ta Isra'ila ta guji ɗaukar ayyukansa. Kwamitin Zabe na Tsakiya ya yi kokarin hana Kahane tsayawa takara a zaben 1984, amma Kotun Koli ta soke wannan haramcin saboda babu wata doka da za ta goyi bayanta. A mayar da martani, Knesset ta amince da dokar ad hoc wacce ta ba da izinin hana jam'iyyun da ke da " wariyar launin fata " ko kuma " marasa dimokiradiyya ". A shekarar 1988, duk da cewa binciken da aka yi ya nuna Kach yana samun karbuwa saboda wani bangare na Intifada na farko da ke gudana
, an hana Kach shiga zaben wannan shekarar.