In May 2008, Rabbi Topp was appointed by the Nassau County Legislature to serve as a Human Rights Commissioner in Nassau County on a multi-racial commission that investigates human rights complaints, promotes tolerance and fights all types of discrimination in the county
Rabbi Topp has served on a number of committees and boards dealing with issues impacting the Jewish community, including on a subcommittee of the Rabbinical Council of America, where he is on the executive board. Rabbi Topp serves on the National Council of AIPAC, the Executive committee of the Southern California Board of Rabbis, the Executive Committee of the Rabbinical Council of California, Executive Committee of the Rabbinical Council of America, and the Halachic Advisory Board for Aleinu.[1][2] His writings have appeared in journals and books.[2]