President Trump renewed his attacks on Attorney General Jeff Sessions on Wednesday, questioning on Twitter why the top U.S. law enforcement official had not replaced the acting FBI director — a move that Trump himself has the authority to do.

In two tweets just before 10 a.m., Trump wrote: “Why didn’t A.G. Sessions replace Acting FBI Director Andrew McCabe, a Comey friend who was in charge of Clinton investigation but got big dollars ($700,000) for his wife’s political run from Hillary Clinton and her representatives. Drain the Swamp!”

Trump has for days been attacking his attorney general, and he has similarly been critical of McCabe, who took over as the acting director of the FBI after Trump fired James B. Comey. But the president’s latest attack is curious.

[The standoff between Trump and Sessions escalates]

Sessions was not the attorney general during the FBI’s investigation into Hillary Clinton’s use of a private email server. And the president himself could remove McCabe without Sessions. Administration officials actually contemplated doing so after Comey’s firing. Sessions and Deputy Attorney General Rod J. Rosenstein met with four other candidates to lead the FBI on an interim basis, though the administration ultimately stuck with McCabe.

The others who interviewed were Michael Anderson, the special agent in charge of the FBI’s Chicago division; Adam Lee, the special agent in charge of the FBI’s Richmond division; Paul Abbate, the executive assistant director of the FBI’s Criminal, Cyber, Response and Services Branch; and William “Bill” Evanina, the national counterintelligence executive in the Office of the Director of National Intelligence.

Asked during the White House news briefing Wednesday why Trump hadn’t simply removed McCabe himself, press secretary Sarah Huckabee Sanders noted he had nominated Christopher A. Wray, a white-collar defense lawyer who had previously led the Justice Department’s criminal division, to take the permanent FBI director job. She said Trump was “looking forward to getting him confirmed soon.”

[Trump is ratcheting up his abuse of Jeff Sessions. And Sessions has no good options.]

A Justice Department spokeswoman declined to comment. The FBI also declined to comment.

In recent days, Trump has talked with advisers about replacing Sessions as his attorney general, and he has simultaneously criticized him in public. He has called Sessions “very weak’’ on investigating Hillary Clinton’s “crimes’’ and claimed he had not aggressively hunted those who have leaked intelligence secrets since he has been in office.

At a news conference Tuesday, he said he was “disappointed” in Sessions and declined to say exactly what his future was.

“We will see what happens,” Trump said. “Time will well. Time will tell.”

Sanders said Wednesday that Trump was “disappointed” in Sessions, though she hinted that didn’t necessarily mean he would be ousted.

“You can be disappointed in someone but still want them to continue to do their job,” Sanders said.

Sanders also seemed to reject the notion that Sessions could redeem himself by, for example, launching a leak investigation.

“I don’t think that’s the nature of the relationship,” Sanders said.

Officials have said Sessions is due to announce in coming days a number of criminal leak investigations based on news accounts of sensitive intelligence information. Sanders said she did not believe the president and Sessions had spoken this week, though Sessions had been at the White House for a principals committee meeting.

Congressional Republicans have come to the defense of Sessions, publicly urging Trump to back off his criticism of the attorney general.

[Sen. Bob Corker: ‘No professional reason’ for Attorney General Jeff Sessions to step down]

In a brief interview Wednesday Senate Majority Leader Mitch McConnell (R-Ky.) reiterated his public support for Sessions, which came Tuesday when McConnell praised Sessions’ job performance and voiced support for the attorney general’s recusal of the Russian investigation.

McConnell declined to say if he directly raised the issue with Trump but made clear that he has voiced that support for Sessions to high-level officials.

“I’ve conveyed that to the public and to others,” McConnell said.

A person familiar with internal White House discussions about Sessions said Trump’s attacks on Sessions are a public airing of what the president has been saying for months privately — that he blames Sessions’s recusal for the appointment of a special counsel to investigate possible ties to Russia. But the person cautioned that neither the president nor his advisers have articulated a plan for replacing Sessions with someone else, and the angry words are primarily a venting of the president’s anger, rather than a calculated effort to drive the attorney general out of office.

Sessions has shown no indication of stepping aside voluntarily.

In a recent conversation, Sessions’s chief of staff, Jody Hunt, told White House Chief of Staff Reince Priebus that the attorney general had no intention of stepping down. Hunt, according to people familiar with the conversation, made it clear to Priebus that Sessions “plans to move forward with his agenda in the department, and he has no plans for resigning.’’ Priebus, for his part, did not say Trump planned to fire Sessions if he did not leave, these people said.

Trump has also shown some ire for McCabe, who seemed to put himself at odds with the Trump administration in May when, during an appearance before Congress, he rejected the White House’s characterization of the Russian meddling probe as a low priority and delivered a passionate defense of Comey.

[Acting FBI director contradicts Trump White House on Comey, Russia probe]

Trump’s latest line of attack refers to an issue that emerged late in the 2016 presidential campaign, when it was revealed that the political action committee of Virginia Gov. Terry McAuliffe, a longtime ally of Hillary Clinton, gave nearly $500,000 to the 2015 state senate campaign of McCabe’s wife, Jill McCabe. The Virginia Democratic Party, over which McAuliffe exerts considerable control, donated an additional $207,788 worth of support to McCabe’s campaign in the form of mailers, according to state campaign records.

Andrew McCabe was a senior FBI official at the time of that 2015 election, which Jill McCabe lost. After that election, Andrew McCabe was promoted to the No. 2 position at FBI headquarters under then-FBI director Comey. As deputy director, McCabe was part of the senior leadership team overseeing the Clinton email investigation, and a stalled probe involving the Clinton Foundation. Within the FBI, some agents were concerned about McCabe’s involvement in those cases, given the previous campaign donations, but FBI ethics officials told McCabe it was not a conflict of interest to be involved with those cases. The issue is now being investigated by the Justice Department’s inspector general.

When the president fired Comey in May, McCabe became acting director of the FBI, and even had a White House interview to take the job on a permanent basis. Since Comey’s firing, many inside the agency and the larger federal law enforcement workforce have rallied to support McCabe, who is generally regarded internally as trying to maintain and defend the agency’s independence in the face of criticism from Trump.

Trump himself has the power to replace McCabe as the interim FBI director. When officials were considering doing so months ago, they were relying on the Vacancies Reform Act, which says only the president can do so. Officials said at the time that if McCabe were to have been replaced, he would have returned to his role in the No. 2 spot.

Paul Kane, Philip Rucker and Jenna Johnson contributed to this article.