Why aren’t American men winning Grand Slams?

While Serena and Venus Williams, Sloane Stephens and Madison Keys represent America at the world’s top tennis tournaments, the men’s side has not seen a Grand Slam winner since Andy Roddick in 2003. Katrina Adams, the U.S. Tennis Association’s first-ever black president, told NewsHour Weekend’s Christopher Booker that bringing more communities into the game should change that.