The resignation was the culmination of a toxic relationship that frayed just weeks into the attorney general's tumultuous tenure, when he stepped aside from the investigation into potential coordination between the president's campaign and Russian Federation.
Whitaker, who may now inherit Robert Mueller's Russian Federation probe from deputy attorney general Rod Rosenstein, has written in a CNN op-ed that the inquiry into the Trump campaign is "going too far".
Sen. John Cornyn, R-Texas, released a statement, similarly praising Sessions for his decades-long dedication to public service. He said he had quit the role at the president's request. Sessions' recusal prevented him from stopping the probe, which Trump has attacked as an unfair "witch hunt". "Why is the President making this change and who has authority over Special Counsel Mueller's investigation? He will serve our Country well".
In an August 2017 op-ed published on the CNN website, the former federal prosecutor argued that Mueller had come "dangerously close" to crossing a "red line" in the investigation by looking at Trump's personal finances and those of his business. "A permanent replacement will be nominated at a later date", the president wrote after sidestepping a question about Sessions' future during a wild press conference.
In this photo from December 17, 2016, Jeff Sessions cheers on the crowd during a rally for Donald Trump at the Ladd-Peebles Stadium, in Mobile, Alabama.
Schumer declined to answer a question about what he would want to see in an attorney general nominee, while raising suspicions about Trump's decision to oust Sessions.
In August he took to Twitter to declare: "This is a bad situation and Attorney General Jeff Sessions should stop this Rigged Witch Hunt right now, before it continues to stain our country any further".
After enjoying Sessions' early support on the campaign trail, Trump turned against his AG in March 2017 after he recused himself from a probe into Russia's interference in the 2016 election. "It is time for Rosenstein, who is the acting attorney general for the purposes of this investigation, to order Mueller to limit the scope of his investigation to the four corners of the order appointing him special counsel". The attorney general, for his part, proved determined to remain in the position until dismissed.