This just in
Homeland Security adviser Tom Bossert is resigning, Bloomberg's Jennifer Jacobs reports. In a statement, the White House said: "The president is grateful for Tom's commitment to the safety and security of our great country. Tom led the White House's efforts to protect the homeland from terrorist threats, strengthen our cyber defenses, and respond to an unprecedented series of natural disasters."
As another Bloomberg correspondent, Shannon Pettypiece, tweeted, "Bossert was a crucial figure in the West Wing. He was viewed as someone stable, got things done, trusted by Trump, knew how to communicate with Trump." Jacobs, though, writes that Bossert "is essentially being fired" and that she has been told he is "resigning at the request of new National Security Adviser John Bolton."
Bossert is the latest administration official to be making an exit after a turbulent few months that have seen the departures of Secretary of State Rex Tillerson, Veterans Affairs Secretary David Shulkin, FBI Deputy Director Andrew McCabe, National Economic Council director Gary Cohn, and others.