Former White House Chief of Staff Mark Meadows Testifies in Trump Investigation

Mark Meadows, the former White House chief of staff under Donald Trump, has testified before a federal grand jury in the special counsel's investigation into Trump. Meadows is seen as a potentially key witness in both the documents and Jan. 6 inquiries. It is not clear when he testified or if he was questioned about one or both of the cases. Meadows has kept a low profile in the investigations, and some of Trump's advisers believe he could be a significant witness.