"I thank you for hosting us all here tonight as we reaffirm our bonds of friendship, of cooperation, of partnership and reaffirm our commitment to our maximum pressure campaign to ensure that the Korean peninsula is denuclearised", Ivanka said.
Speaking from Pyeongchang, Sanders said the newest sanctions imposed by the president on the rogue regime are tougher than any before.
Defector Kim Hyung-soo, who defected to South Korea with his son, a former league skier, in 2009, also described the women as "slaves", although he did not claim the abuses were sexual.
His trip comes during a period of Olympics-driven rapprochement between the two Koreas that follows years of tensions sparked by the North's nuclear and missile programs. Her presence there could bring her in contact with a visiting delegation from North Korea, the country in a monthslong war of words with U.S. President Donald Trump's administration.
Trump has said she's here to support U.S. Olympic athletes, but politics is an unavoidable ingredient for an adviser and daughter of a president.
S., the local media reported Saturday.
It became even more politically charged when Vice President Mike Pence was seated next to Kim Jong-un's sister and refused to stand during the playing of the North Korean national anthem.
This computer-generated image shows U.S. President Donald Trump's daughter Ivanka (L) and Kim Yong-chol, a top North Korean party official.
Kim Yo-jong gave President Moon Jae-in a letter from her brother that included an invitation to the South's leader to visit Pyongyang at the earliest possible date.
Meanwhile, some Twitter users pointed out something odd about the president's words of praise over his daughter's visit - Vice President Mike Pence already represented the USA in a visit to South Korea as the head of the USA delegation to the Olympics during the opening ceremonies earlier this month.
Unification ministry spokesman Baek Tae-hyun has said the government was aware of widespread misgivings about the visit, but accepted it as the "chances for improving inter-Korean ties and a peace settlement might be improved".
Experts have warned that North Korea's attendance at the Olympics and an apparent thaw in relations with its southern neighbour were are aimed at driving a wedge between the allies.
"When the athletes go back to Pyongyang, they will be shown the best buildings around town".
Pence was set to meet with North Korean officials during the Games as well but North Korea reportedly abruptly cancelled at the last minute.