In 1978, Roybal was involved in a vote-buying investigation known as the Koreagate scandal, in which he failed to properly report to the House Ethics Committee a gift of $1000 from a South Korean lobbyist, Tongsun Park. During the investigation by the Ethics Committee, Roybal mistakenly stated he had never met Park. Park later testified that he had met Roybal four years earlier, for less than two minutes, and that he hardly remembered the man. In addition, Roybal voted against every bill that would have benefitted Park, thus discrediting allegations of a vote buying scheme.