Lou Dobbs walked away from more than $9 million when he quit CNN, ending a long-running clash that boiled over during a debate about President Obama's birth certificate, sources said yesterday. Dobbs, who will be replaced on the network by veteran Washington political correspondent John King, abruptly announced his resignation on air Wednesday night and offered no clue about what he planned to do next. But the beginning of the end really came in July, when CNN President Jonathan Klein told Dobbs' staff in a memo to drop so-called birther stories about conspiratorial doubts that Obama was US-born, sources told...