Governance Sen. Tim Kaine on Presidential War Powers Watch the UVA Democracy Biennial The Biennial was originally broadcast September 24-25, 2021 Watch now About this video April 20, 2018 Sen. Tim Kaine Hosted by Bill Antholis Sen. Tim Kaine visited the historic Rotunda at the University of Virginia to talk about his legislative efforts to define the limits of both presidents and Congress to declare and prosecute wars.