The U.S. Department of Justice is investigating whether the decision of the White House television press pool to halt coverage of President Donald Trump last month violated antitrust law. Emily Covington, a department spokesperson, says group boycotts among business competitors might violate U.S. law. The television pool of five broadcasters last month ceased presidential coverage after the administration barred CNN, MS NOW and Politico from the White House. Messages were sent late Saturday to the five outlets seeking comment. The White House press pool, which is a rotating cast of news outlets that covers the president, has become a proxy for the wider fight over press freedom.