New book: Paul Ryan was convinced Trump had narcissistic personality disorder

Tonight on the Last Word: A new book reveals Donald Trump screamed at Paul Ryan for condemning white supremacy. Also, the child tax credit lifted three million kids out of poverty in July. Plus, Pennsylvania Republican lawmakers subpoena voters’ personal information. And Republican governors threaten to sue the Biden administration over the vaccine mandate plan. Rep. Hakeem Jeffries, Mary Trump. Gene Sperling, Rep. Conor Lamb, Stuart Stevens and Zerlina Maxwell join Lawrence O’Donnell.