For weeks, Donald Trump’s fury has been growing at Republicans for failing to pass voter suppression legislation, demanding that they end the filibuster to do so. In a late-night tirade, he urged them to attach the SAVE Act to a must-pass defense spending bill, a dramatic move that reveals his deep frustration with them. As everybody knows, Trump sees restricting voting as the only way to stave off a midterm calamity. Meanwhile, in a striking piece, NBC News reports that Trump’s angry pressure has left Sena…