Here's why Obama stays quiet as Trump attacks his legacy

Washington (CNN)With each passing day, President Donald Trump unravels another piece of Barack Obama's legacy. The Deferred Action for Childhood Arrivals program. The Paris climate accords. The Iran nuclear deal. Transgender people serving in the military. And, now, that most personal of policies for the former president: The Affordable Care Act. And yet Obama watches from the sidelines, mostly silent, as Trump punches holes in the dry wall of his freshly finished legacy.--More...