He made it personal. He appealed to their loyalty. He asked them to give him what every modern president has had. He argued the facts, disputed the politics, quarrelled over the history and at times lashed out at those who still refused to stand with him. Yet in the end, after years of frustration with Republicans blocking his ideas in Congress, President Obama found the most sweeping legislative initiative left on his agenda thwarted not by the opposition but by his own party. If not for his fellow Democrats, Obama would have a landmark trade bill heading to his desk for signature. The ...