WASHINGTON (AP) — Former presidents are shedding a traditional reluctance to criticize their successors, unleashing pointed attacks on the Trump White House and the commander in chief — but without mentioning him by name. Remarks on the same day by former Presidents George W. Bush and Barack Obama raise the prospect that more dissenters will follow in defiance of President Donald Trump and his policies. "What they are doing is laying down a marker for acceptable public discourse," said Kathleen Hall Jamieson, a professor of political communication and rhetorical theory at the University of Pennsylvania.