Complex sentence: He also serves on the Advisory Council for Harvard University's Center for Ethics and the Professions and is a member of the Media Security and Reliability Council, which is part of President Bush's Homeland Security initiative.
Split into simpler sentences: He also serves on the Advisory Council for Harvard University's Center for Ethics and the Professions. He was a member of the Media Security and Reliability Council, which is part of President Bush's Homeland Security initiative.