sentences:  He was elected to the 14th Knesset as a representative of Yisrael BaAliyah.He resigned from the party along with Yuri Stern and formed the Aliyah party, which later merged with Yisrael Beiteinu, and as a member of this party he was elected to the 15th Knesset and to the 16th Knesset (as part of the National Union list, which Yisrael Beiteinu joined in that election).In the 14th Knesset he served as chairman of the Science and Technology Committee, and he served as Deputy Chairman of the 16th Knesset.