evidence: WASHINGTON — Special counsel Jack Smith's office has obtained a recording of former President Donald Trump discussing a classified planning document that he had taken from his time at the White House, a source directly familiar with the matter told NBC News. [...] The recording was made in July 2021 during a meeting at Trump's golf club in Bedminster, New Jersey, that included people who were helping former White House chief of staff Mark Meadows write his memoir, the source said. The tape was played during testimony provided to the grand jury that has been investigating Trump's handling of classified documents, the source added. [...] Trump has denied any wrongdoing, rebuffing allegations that he mishandled classified documents. He claimed last year that he can declassify documents "by thinking about it."