Agudat Yisrael
For the 2006 Knesset elections he was placed sixth on the United Torah Judaism list, and became a Knesset member when the party won six seats. He resigned his seat on 31 July 2008 as part of a rotation agreement between the Agudat Yisrael and Degel HaTorah factions of UTJ, and was replaced by Uri Maklev (Cohen belongs to Agudat Yisrael).