Second gentleman Doug Emhoff's chief of staff to depart

Now in its second year, the Biden White House is seeing some personnel changes — second gentleman Doug Emhoff's chief of staff announced she'll be leaving the job soon.

In a letter to the second gentleman's office, obtained exclusively by CBS News, chief of staff Julie Mason announced her departure, calling it one of the "toughest decisions," she's ever made but "the right one" for her children. Katie Peters, who is currently communications director for Emhoff's office, will serve as acting chief of staff until a permanent replacement is selected.

Mason, who has been Emhoff's communications director since Inauguration Day, has had several stints in the White House, working in both the Obama and Clinton administrations in the president's press office, as well as the offices of the first and second ladies. She was also the communications director for then-second lady Jill Biden during Obama's 2012 reelection campaign.