Kariv publishes opinion pieces in the news and online. He has published several position papers on a variety of topics, including a proposal for the re-organization of religious service provisions in Israel, a suggestion for separation of religious institutions from state bodies, Israeli public space on the Sabbath and a report on the crisis of conversion. Kariv is regularly invited to represent the Reform movement before Knesset committees and in a variety of other public settings. Between 2006 and 2009, Kariv took part in the Knesset Constitution, Law and Justice Committee's discussions over the proposed writing of an Israeli constitution. In these meetings, Kariv represented the liberal Zionist point of view. Together with his colleagues at the IMPJ, Kariv proposed constitutional principles for the State of Israel.
