He served as a member of parliament from 1981 to 2000. He served as Prime Minister from 2000 to 2002 under then President Kim Dae-jung In 2002 Vowing to eradicate regionalism and corruption in 2004, he was indicted without jail on charges of embezzling 200 million won in illegal political funds from SK Group during the presidential election. The Seoul Central District Court sentenced him to two years in prison suspended and ordered him to pay 200 million won in compensation.