The National Football League recently announced a new policy requiring players to stand during the national anthem or stay in the locker room. Earlier this week, President Donald Trump called off a visit by the Philadelphia Eagles to the White House, citing the dispute over the NFL kneeling ban. We check out issues of constitutionality and find out how players and owners are reacting. GUESTS: Howard Bryant - author of "The Heritage: Black Athletes, A Divided America, and the Politics of Patriotism." He's a Senior writer for ESPN The Magazine and an NPR correspondent. Michael McCann - legal analyst for Sports Illustrated , and Director of the Sports and Entertainment Law Institute at UNH School of Law. Here's a link to Michael McCann's articles for Sports Illustrated, including his most recent on why the White House rescinding the invitation to the Philadelphia Eagles team could boost Colin Kaepernick’s collusion case. Howard Bryant spoke with NPR about how the the NFL's new rule on