Tonight on The Last Word: Biden-Trump debate rules include muted mics and no staff interaction with candidates. Also, GOP justices issue a rule weakening anti-corruption law. Plus, Trump’s Florida residency could complicate his VP choice. And Democrats push to codify rights amid fears that the Supreme Court could target contraception and same-sex marriage. Rep. James Clyburn, Andrew Weissman, Ben Ginsberg, and Sen. Tammy Baldwin join Lawrence O’Donnell.