Who is Sally Quillian Yates?

FILE - In this June 28, 2016 file photo, Deputy Attorney General Sally Yates speaks during a news conference at the Justice Department in Washington. The Justice Department says it’s phasing out its relationships with private prisons after a recent audit found the private facilities have more safety and security problems than ones run by the government. Yates instructed federal officials to significantly reduce reliance on private prisons.  (AP Photo/J. David Ake, File)

Credit: J. David Ake

Credit: J. David Ake

FILE - In this June 28, 2016 file photo, Deputy Attorney General Sally Yates speaks during a news conference at the Justice Department in Washington. The Justice Department says it’s phasing out its relationships with private prisons after a recent audit found the private facilities have more safety and security problems than ones run by the government. Yates instructed federal officials to significantly reduce reliance on private prisons. (AP Photo/J. David Ake, File)

Sally Quillian Yates, fired in January as acting attorney general after she defied President Donald Trump, grew up in Atlanta and was a federal prosecutor here for 25 years before she joined the Obama administration in Washington.

» Before she was fired, Sally Yates warned White House that Michael Flynn was ripe for Russian blackmail

Yates received a hand-delivered notice of her dismissal, the New York Times reported. The firing was the climax of an extraordinary day in which Yates, acting as the nation's top law enforcement officer, instructed the Justice Department not to defend Trump's executive order banning refugees from entry into the United States.

“At present, I am not convinced that the defense of the executive order is consistent with these responsibilities, nor am I convinced that the executive order is lawful,” she wrote in a letter to the department’s lawyers, according to the Times.

The Trump administration lashed out at Yates immediately after her firing, saying she had “betrayed the Department of Justice.”

“Ms. Yates is an Obama administration appointee who is weak on borders and very weak on illegal immigration,” said a statement issued by White House Press Secretary Sean Spicer.

In her 2015 confirmation hearing as deputy attorney general (1:16:00 on C-SPAN tape), Yates was confronted with this question from Alabama Sen. Jeff Sessions, who is now Trump's nominee to become attorney general: "Do you think the attorney general has a responsibility to say no to the president if he asks for something that's improper?"

Yates replied: “Senator, I believe that the attorney general or the deputy attorney general has an obligation to follow the law and the Constitution, and to give their independent legal advice to the president."

Yates made a name for herself as a prosecutor  in the early 1990s when she shook up City Hall by indicting a number of high-profile defendants in an airport corruption and bribery scandal. After a lengthy investigation and trial, Yates obtained convictions against a number of city officials, including former City Councilman D.L. "Buddy" Fowlkes and former Aviation Commissioner Ira Jackson.

» Yates for governor? Georgia Democrats already talking

Yates, 56, grew up in Atlanta and received her undergraduate and law degrees from the University of Georgia. Her father Kelley Quillian, served as a judge on the Georgia Court of Appeals until he retired in 1985.

In the U.S. Attorney's Office here, Yates was promoted in 1994 to oversee fraud and public corruption prosecutions and oversaw a number of notable cases. Among those she successfully prosecuted: former Atlanta Mayor Bill Campbell, former Fulton County Commission Chairman Mitch Skandalakis and former state school Superintendent Linda Schrenko.

Later, Yates served as lead prosecutor in the case against Centennial Olympic Park bomber Eric Robert Rudolph.

She later served as U.S. attorney in Atlanta.

» Yates on her work: 'Worth every penny you don't make'

President Barack Obama nominated Yates to be deputy U.S. attorney general in January 2015 and the Senate confirmed her five months later. She became acting U.S. attorney general when Loretta Lynch resigned from the post on Inauguration Day.

Late Monday, Yates was replaced in her acting position by Dana J. Boente, a U.S. attorney in Virginia, whose first act was to rescind Yates’s order to the Justice Department.

Yates’s appointment as acting attorney general would not have lasted much longer in any case. A confirmation vote for Trump’s nominee for the job, Senator Sessions, is expected Tuesday in the Senate Judiciary Committee.