Is this the tip of the post-midterm election fallout and is there more changes in the works?

US Attorney General Jeff Sessions resigns from DOJ on Trump’s request
RT | Nov 7, 2018
https://on.rt.com/9i43

[snip]

US President Donald Trump has requested - and received - the resignation of Attorney General Jeff Sessions. The Department of Justice will be led by his chief of staff Matthew Whitaker until a permanent replacement is nominated.

“We thank Attorney General Jeff Sessions for his service, and wish him well!” Trump said on Twitter Wednesday afternoon, after announcing the appointment of Whitaker.

There is a potential problem with Whitaker’s appointment over the head of the current deputy AG Rod Rosenstein, who has been in charge of special counsel Robert Mueller’s investigation into allegations of Trump-Russia “collusion” during the 2016 presidential election. Rosenstein was confirmed to his post by the Senate.

Sessions, a senator from Alabama at the time, joined the Trump campaign early on and was considered a favorite to take over the Department of Justice in the new administration. He was immediately forced to recuse himself from any probes into “Russiagate,” due to his role in the campaign, however.

Since then, Trump has frequently clashed with Sessions over the DOJ’s handling of the Russia probe. The DOJ’s refusal to comply with congressional oversight requests to turn over documents related to the FBI’s spying on the Trump campaign also caused increasing frustration at the White House, prompting the president to declare at one point, “I have no attorney general!”

“I’m not happy at the border, I’m not happy with numerous things,” including the Russia probe, Trump told The Hill in September. “I’m very disappointed in Jeff. Very disappointed.”