The Blue House says it's necessary for the presence of U.S. Forces in South Korea to continue,... even if a peace treaty is eventually signed.

"President Moon said U.S. Forces in Korea is a matter concerning the South Korea-U.S. alliance. It has nothing to do with the signing of a peace treaty."

Such comments were made after Moon Chung-in,... President Moon's special diplomatic adviser, insisted on Tuesday the presence of U.S. troops in South Korea would no longer be justified should the two Koreas formally end the Korean War.
The Blue House also confirmed Presidential Chief of Staff Im Jong-seok called the special adviser asking him to avoid remarks that could confuse the public of the president's position.
A high ranking Blue House official, who did not want to be named, asserted that the USFK's role as a mediator between surrounding powers, such as China and Japan,... is critical.
The same official also said Pyongyang was not among the proposed North Korea-U.S. summit sites that President Moon and President Trump discussed on Saturday.