Korea's challenge after Park: Fixing a system mired in graft

South Korea is turning to a daunting yet familiar task in the aftermath of Park Geun-hye's ouster: rooting out corruption among political and business leaders.

It's a decades-long dilemma. Since Park's father was assassinated in 1979, nearly every president or their family members have faced graft allegations or spent time in prison. One, Roh Moo-hyun,…