Lawrence: Republican Senator Sheehy just made Donald Trump Iran's ‘dope’

Tonight on The Last Word: The U.S. and Iran give differing accounts of deal negotiations. Also, a federal judge rules ICE can’t make arrests in immigration courts. Plus, Sen. Jon Ossoff defends his Senate seat against Mike Collins. And Jonathan Swan and Maggie Haberman explain how to cover Trump. John Kirby, Sen. Sheldon Whitehouse, Ali Velshi, and Sen. Jon Ossoff join Lawrence O’Donnell.