President Obama and the First Lady had a private meeting earlier with the Mandela family.
They spent about 20 minutes together.
Respecting the family’s wishes, the first couple will not visit Mandiba — as Mandela is affectionately called in South Africa — in the hospital.
Later, President Obama spoke at the Grand Union building in Johannesburg, where Mandela was inaugurated as his country’s first black president.
He and the First Family are traveling in Africa this week.
The Obamas also made a stop in Senegal and plan to visit Tanzania before heading home to Washington.