President Biden has named Jeff Zients as his next chief of staff. As the president prepares for a likely reelection bid while facing House Republican-led investigations, he has tapped Zients to succeed Ron Klain as White House chief of staff. Zients is no stranger to the Biden White House. At the start of the administration, he ran the response to the COVID-19 pandemic. This is the first major personnel change for an administration that has had low turnover in its senior staff and Cabinet.