Korean prosecutors have contributed to successful prosecution of many highly ranked officials and renowned conglomerate business leaders, including two former presidents (1995) and sons of incumbent presidents (1997 and 2002 respectively). Especially in 1997, the South Korean prosecution service contributed to the imprisonment of the son of the incumbent president, Kim Hyeon Chul, which happened for the first time in world judicial history. As the result of successful, even relentlessly fair probings and prosecutions of corporate crimes, they often face criticism from corrupt politicians and business leaders as to whether prosecutors' application on laws may be too severe and harsh.