Outgoing Chief U.S. District Judge Beryl Howell has ruled that Donald Trump's attorney, Evan Corcoran, must provide additional testimony as part of an investigation into the former president's handling of classified documents. The decision is a significant development in the investigation into the Mar-a-Lago document scandal, and could potentially provide key evidence in the case. Trump's team is expected to appeal the ruling and ask for the decision to be overturned.