Michael Collins announced his departure in a letter to staff after 16 months in the role.
“It was a tough decision, but I decided to leave this incredible experience in mid-August and move on to the next stage of my life,” he wrote. “I am so grateful to the Vice President for entrusting me with this privilege and I have been honored to support the tireless, committed and historic work of the President and Vice President.”
Kosoglu, was one of Harris’s longest-serving aides and worked as Harris’ domestic policy adviser after serving as his senior adviser during the transition and serving as chief of staff in both his Senate office and the campaign previous presidential.
Groob, who was director of speechwriting, announced her departure after working in her role for less than four months. She took over the speechwriting job from Kate Childs Graham who announced her departure in February.
The West Wing has also seen a flurry of personnel changes as Democrats head into the midterm campaign season.
Additionally, several mid-level aides have taken on more senior positions in the administration after an inside push from White House chief of staff Ron Klain to finalize Biden’s senior team for the coming months in preparation. a stormy political season ahead of the midterm elections. .
This story has been updated with additional details.