The head of the operator of Incheon International Airport, Korea's main gateway, resigned Monday, two months after a heated exchange with President Lee Jae Myung. Lee Hag-jae, president of Incheon International Airport, was scolded by the president during a policy briefing in December after sidestepping his question on whether proper measures are in place to stop travelers from illegally exporting U.S. dollars by hiding $100 bills in between book pages. The outgoing chief is reportedly planning to run for Incheon mayor as a candidate of the main opposition People Power Party in the June local elections. His term as president was due to end in mid-June after being appointed by former President Yoon Suk Yeol in 2023. A farewell ceremony for Lee will be held Wednesday, the company said.