White House Press Secretary Sean Spicer announced Monday that acting Attorney General Sally Yates has been relieved of her duty after she sent a memo instructing Justice Department attorneys not to defend Trump’s refugee and travel executive order.

Dana Boente, U.S. Attorney for the Eastern District of Virginia, has been named acting attorney general.

Stephen Miller, senior policy advisor to Trump, told Tucker Carlson tonight that Yates' refusal to defend the executive order was a "betrayal of her office."

"What's unprecedented here is that the Justice Department would refuse to enforce a lawful federal order for political reasons," Miller said. "That is dangerous to our constitutional system."

Miller said that Boente, unlike Yates, will enforce the law and defend Trump's executive order.

"The core power of the federal government on immigration is its right to deny entry to any alien at any time if it believes that to be in the national interests and national security interests of the United States."

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