WASHINGTON, D.C. - Homeland Security Adviser Tom Bossert is leaving the Trump administration, the White House announced on Tuesday.

Bossert did not resign, CBS News' Margaret Brennan reports, but was rather pushed out. Although widely considered effective in his duties, Bosset's portfolio overlapped with that of former National Security Adviser H.R. McMaster's, causing the two to compete. The arrival of John Bolton as the new national security adviser on Monday triggered the decision to remove Bossert. 

It is unclear whether Bossert's departure was requested by Bolton or if this is a restructuring of the job. No successor has been named.

"The President is grateful for Tom's commitment to the safety and security of our great country," White House Press Secretary Sarah Sanders said in a statement.

"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. President Trump thanks him for his patriotic service and wishes him well."

Bossert had been a high-profile member of the administration who appeared on television with some frequency. On Sunday, he appeared on ABC's "This Week" to discuss the possibility of U.S. strikes against the Syria in response to this weekend's suspected chemical weapons attack.

On the program, Bossert hinted at the possibility of military strikes against Bashar al-Assad's government, saying that the U.S. "wouldn't take anything off the table."

Bossert also spoke at the Threat Conference in Sea Island, Georgia, on Monday, in which he discussed the Trump administration. 

"You won't believe this, but this White House seems to function just about the same as every other White House," he said at the conference. "At the end of the day, the only thing that creates instability or the perception of it is, a, the coverage, and b, the turnover."

This is a developing story. Check back here for updates. 

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