CNN has tapped the daughter of President Obama’s closest adviser to cover the Department of Justice — an assignment that comes a week after President-elect Donald Trump branded the network “fake news,” The Post has learned. Laura Jarrett’s assignment comes a week after Trump publicly refused to answer a CNN correspondent’s question at a press conference. “You are fake news,” Trump said to CNN’s Jim Acosta. Valerie Jarrett’s daughter quietly joined CNN in September as a reporter in the network’s Washington bureau. She came to CNN with no experience in journalism. But the Harvard educated lawyer defended companies and individuals...