DN Speak Daily: Why a DOJ lawyer questioned a Trump case witness at the White House

"It is completely standard that when you are interviewing someone who works in the White House to do the interview at the White House," said David Aaron, a former federal prosecutor who worked on national security cases. "When you are interviewing someone who works at the NSA [National Security Agency], you go to NSA. It has nothing to do with a power move; it's a courtesy."…