WASHINGTON — President Donald Trump has spoken with advisers about firing Attorney General Jeff Sessions, officials say, and launched a fresh Twitter tirade against the man who was the first U.S. senator to endorse his candidacy.

“Attorney General Jeff Sessions has taken a VERY weak position on Hillary Clinton crimes (where are E-mails & DNC server) & Intel leakers!” Trump tweeted.

The president’s anger over Sessions’ decision to recuse himself from the government’s investigation of Russian meddling in the U.S. election had burst into public view Monday when he referred to Sessions in a tweet as “beleaguered.” Privately, Trump has speculated aloud to allies in recent days about the potential consequences of firing Sessions, according to three people who have recently spoken to the president.

Today, White House press secretary Sarah Huckabee Sanders told Fox News’ “Fox & Friends” that the president is “frustrated and disappointed” with Sessions for recusing himself from the Russia probe. “That frustration certainly hasn’t gone away. And I don’t think it will,” she said.

Trump often talks about making staff changes without following through, so those who have spoken with him cautioned that a change may not be imminent or happen at all.

“So why aren’t the Committees and investigators, and of course our beleaguered A.G., looking into Crooked Hillarys crimes & Russia relations?” the president tweeted Monday. His tweet came just hours before his son-in-law, White House senior adviser Jared Kushner, traveled to Capitol Hill to be interviewed about his meetings with Russians.

Trump’s rapid-fire tweeting resumed at daybreak today, with the president wondering aloud about Sessions’ “VERY weak” position on “Hillary Clinton crimes.”

In another post to his Twitter account, Trump said: “Ukrainian efforts to sabotage Trump campaign — quietly working to boost Clinton. So where is the investigation A.G.”

Trump’s criticism of Sessions has fueled speculation that Sessions may resign.