Caroline Kennedy got a good laugh out of Grace Gummer's portrayal of her younger self in Ryan Murphy's "Love Story," Kennedy's son, Jack Schlossberg, said on Wednesday. Speaking to Katie Couric on her podcast "Next Question with Katie Couric," Schlossberg recalled showing Kennedy clips of Gummer's performance in the show, although neither watched all nine episodes of the FX miniseries. "Love Story" followed the lives, marriage and death of Kennedy's brother, John F. Kennedy Jr., and his wife, Carolyn Bessette. Its finale aired on March 26. Couric's interview with Schlossberg focused mainly on his own political prospects as he runs for the U.S. House of Representatives in New York, but she asked the potential congressman his thoughts on the show because he has been outspoken about it since it began airing in February. "My issue is with, you know, we have a lot of serious problems facing our country and my family. We're not just celebrities. We're not just icons.…