Tonight on The Last Word: Jack Smith urges the Supreme Court to act quickly on the Trump January 6 case. Also, President Biden says Trump's comments about NATO are "un-American." Plus, Pennsylvania Democrats retain a narrow majority in a House election. And the Kansas City Chiefs parade shooting falls on the six-year remembrance of the Parkland massacre. Simon Rosenberg, PA State Rep.-elect Jim Prokopiak, PA House Speaker Joanna McClinton, Rep. Abigail Spanberger, Neal Katyal, and David Hogg join Lawrence O'Donnell.