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U.S. President Barack Obama delivers a speech next to a sign language interpreter (R) during the memorial service for late South African President Nelson Mandela at Soccer City Stadium in Johannesburg. South Africa's deaf community on Tuesday.
Ben Curtis / AP
Close to 100 heads of state traveled to South Africa to attend events commemorating the life of former South African President Nelson Mandela.
The man accused of being a sign language fraud at Nelson Mandela's memorial service spoke publicly for the first time about his performance. NBC's Ron Allen reports.