Why did Denise Chung resign from the Justice Department?

Denise Chung, head of the Justice Department's Washington, D.C. criminal Division, resigned just one day after President Trump nominated Ed Martin for Washington's top federal prosecutor position. In an email obtained by CBS News, Chung informed her colleagues she was leaving her role. The timing is significant as Martin is known to be a loyal ally of President Trump and has defended January 6 rioters. This resignation appears to be directly related to the political shift in leadership at the Justice Department, suggesting potential disagreement with the new appointment.