Over two tweets, he accused Mr. Sessions of becoming a Democratic tool, apparently over the recent federal indictments of two sitting Republican House members - Reps.
Trump tweeted Monday that "investigations of two very popular Republican Congressmen were brought to a well publicized charge, just ahead of the Mid-Terms, by the Jeff Sessions Justice Department".
He added: "Two easy wins now in doubt because there is not enough time".
Hunter and his wife, Margaret, were indicted last month on charges of illegally converting $250,000 in campaign funds for personal expenses and filing false records, while Collins was indicted earlier in August on insider-trading charges. With the White House failing to name a permanent U.S. Attorney, the judges unanimously voted to keep Berman as acting U.S. Attorney until a permanent replacement was selected.
The Republican president verbally spat on his attorney general in tweets that dripped with disdain. The comment on Monday was the latest indication that Trump, who ran on a pledge to "drain the swamp", believes his political allies should be immune from prosecution, regardless of the evidence stacked against them.
Both lawmakers have pleaded not guilty.
Senator Jeff Flake, a Republican, said on Twitter the statement was "not the conduct of a President committed to defending and upholding the constitution, but rather a President looking to use the Department of Justice to settle political scores".
Under long-standing Justice Department custom, prosecutors generally avoid public disclosure of overt investigative steps involving a candidate for office or election matters within 60 days of an election.
Trump's second tweet is a lie.
Trump followed up the first tweet with another, saying Democrats must now love Sessions, just like "Lyin' James Comey". He even compares him to former FBI director James B. Comey, who has said Trump repeatedly requested loyalty and even suggested he back off unhelpful investigations. The Dems all hated him, wanted him out, thought he was disgusting - UNTIL I FIRED HIM!
The Hunter investigation began in June 2016, according to the indictment.
The White House had no comment on Trump's tweets, but said he made a decision to not leave the White House and focus on trade calls.