A key witness in the investigation into Donald Trump's handling of classified documents has changed his testimony to implicate the former president, according to a federal court filing. Yuscil Taveras, an IT employee at Mar-a-Lago, has amended his testimony and is now accusing Trump and two of his aides of ordering the deletion of a computer server. Special counsel Jack Smith's team has assured Taveras that he will not face perjury charges. The outcome of the investigation is still unclear, but Taveras' change in testimony could have significant implications for Trump.