Kim Yong Chol, the head of the North's delegation for the closing ceremony, is vice chairman of the ruling party's central committee.
Meanwhile, people viewing the games get glimpses of people whose lives could be in grave danger if tensions with North Korea escalate into a second Korean War.
Vice President Mike Pence attended the opening of the Olympics. "So the maximum pressure campaign is going to continue and intensify".
The vice president's office said the North Koreans expressed their dissatisfaction with Pence's announcement of new sanctions as well as his meeting with North Korean defectors when canceling the meeting.
But a senior administration official ruled out any possible meeting between Ms Trump and officials from North Korea.
South Korean officials did not immediately respond to a request for comment on Tuesday. They met with Moon and urged the South Korean president to visit the North.
She shook hands with the South Korean president.
North Korea has made no comment on the U.S. reports.
Pence, a representative from the National Security Council, a representative from the intelligence community and Ayers were planning to attend from the US side.
The White House advisor allegedly had no plan to meet with the DPRK delegates to the Winter Olympics, but Moon was forecast to emphasize the importance for talks between Pyongyang and Washington during his dinner meeting with Ivanka. Mr. Trump also dismissed Secretary of State Rex W. Tillerson's suggestions of dialogue with the North as premature or a waste of time.
Ivanka Trump is scheduled to meet South Korean President Moon Jae-in on Friday, another salvo in that diplomatic back-and-forth.
During the transition and at the beginning of the administration, Ivanka was involved in conversations with the Olympic committee about the mega event coming over to Los Angeles, another administration official said, explaining the reason for her being selected for the delegation.
"Two days ago, I saw the North Koreans in line at McDonald's (in the Athletes Village dining hall) and I was also in line at McDonald's", said Randi Griffin, one of the unified Korean team players.
The South Korean government said Thursday that it would allow Kim Yong-chol into its country.
Ahead of Pence's visit, Trump officials had insisted they'd requested no meeting with North Korea, but notably left open the possibility one could occur.
'For all the media fawning over the sister of the North Korean dictator, ' he said, 'I think it's important that every American knows who this person is and what she has done'. It was used briefly in August 2015 after North Korea injured two South Korean soldiers and was fully reinstated in January 2016 after North Korea's fourth nuclear test. He was accompanied by the father of student Otto Warmbier, who died shortly after returning to the USA after being imprisoned in North Korea for 15 months.
North Korea has participated in nine Winter Olympics, starting at Innsbruck in 1964.
Given the relatively long lag since the prior reading, it's not clear whether this is the result of positive attitudes surrounding the worldwide games, or if it reflects Americans' sympathy with South Korea over problems with its northern neighbor - a major USA enemy.