Writer, director and producer James L. Brooks has weighed in on the zero-tolerance policy at the US southern border. In a late Saturday night tweet, Brooks claimed President Donald Trump was using a policy of family separation “as hostages to get his damn wall.” Brooks, whose resume includes The Simpsons, Taxi and Mary Tyler Moore television shows, as well as the films Terms of Endearment, The Edge of Seventeen and Broadcast News, said "Nursing babies are being pulled…