Thursday on the News Hour, Kamala Harris and Donald Trump head west as the margins remain razor-thin in critical swing states. As the Supreme Court allows Virginia to purge voter rolls, how unsubstantiated claims of non-citizens voting could affect the election. Plus, we examine the potential economic impact of Donald Trump's promise to deport immigrants en masse. PBS News is supported by - https://www.pbs.org/newshour/about/funders