President Joe Biden speaks during a news conference in Hiroshima, Japan, Sunday, May 21, 2023, following the G-7 Summit.

President Joe Biden said Sunday that Republicans in the U.S. House must move off their "extreme positions" on the now-stalled talks over raising America's debt limit and that there would be no agreement to avert a catastrophic default only on their terms.

In an effort to get negotiations back on track, Biden planned to call U.S. House Speaker Kevin McCarthy, R-Calif., from Air Force One on the way back to Washington after a Group of Seven summit in Japan. World leaders at the gathering expressed concern about the dire global ramifications if the United States were to be unable to meet its financial obligations.