Donald Trump has rescinded his pledge to support the Republican nominee for president. Asked by moderator Anderson Cooper if he stood by the earlier pledge, Trump said: "No, I don't." "We'll see who it is," he said during the CNN town hall. He said he had been treated "unfairly" by the Republican National Committee and the GOP establishment. He said he was unsure whether the Republican establishment was plotting to take the nomination away from him during the convention in Cleveland. He also said he didn't need Cruz to promise to support him should Trump win the nomination. "I’m not...