Lawrence: Attacking voting by mail, Donald Trump wants to take away what Abraham Lincoln gave us

Tonight on The Last Word: California vows to fight Donald Trump’s mail-in voting order. Also, MS NOW reports the Navy sailor who jumped off the USS Lincoln now faces punishment. Plus, Trump attempts to campaign for himself in the midterms. And Trump escalates the trade war with Canada again. California Attorney General Rob Bonta, Lt. Gen. Mark Hertling, Roy Cooper, and Tim O’Brien join Lawrence O’Donnell.