“Just to get here, Liberty and Bell had to beat some tough odds and competition. They had to work hard, to show patience, and be willing to travel over 1,000 miles,” Biden said. “You could say it’s even harder than getting a ticket to the Renaissance tour or, or Britney’s tour. She’s down, it’s kind of warm in Brazil right now.”
Swift performed Sunday night in Brazil after postponing her Saturday show because of extreme heat in the country. Spears is currently not on tour.
The White House did not immediately respond to NBC News’ request for comment on Biden’s apparent mix-up, which comes as voters express concerns in polling about his age.
Read the full story on NBCNews.com here.