“Two more of Joe Biden’s top White House aides are set to appear before the House Oversight Committee for scheduled interviews this week as part of the Republican-led panel’s intensifying investigation into the former president’s cognitive decline and possible efforts to conceal it from the public,” CNN reports.“The committee has scheduled interviews with former Biden counselor Steve Ricchetti and former senior adviser Mike Donilon for Wednesday and Thursday, respectively. In a departure from some previous high-profile witnesses, the two have signaled they will voluntarily sit for them.”