MCCONNELL: "President Trump is still liable for everything he did while in office".
While McConnell didn't vote to convict Trump in the Senate impeachment trial (seven Republicans did), he still delivered a disparaging speech, laying the blame for the violent mob who attacked the Capitol building in Washington DC squarely at the feet of Trump.
Banned from Twitter-his erstwhile weapon of choice for attacking critics-Trump fired his broadside, which blamed McConnell (R-Ky.) for Republicans' loss of Senate control, via a statement from his Save America super PAC.
Furthermore, McConnell used his power as then-majority leader to delay Trump's Senate trial until after he left office. "How does that work?"
"My only regret is that McConnell "begged" for my strong support and endorsement before the great people of Kentucky in the 2020 election, and I gave it to him", Mr Trump said.
"Without my endorsement, McConnell would have lost, and lost badly".
"While the majority of Republicans in the Senate abdicated their responsibility to hold the president accountable, we must hold him accountable for the insurrection that he so blatantly planned", added Thompson.
The deeply personal attack follows McConnell's speech over over the weekend saying that Trump was responsible for the deadly insurrection at the Capitol on January 6.
The clash between the current and former GOP leaders comes as the Republican Party at large grapples with warring factions at odds over whether to continue in Trump's likeness or forge a path veering from the former President's legacy.
Trump's push comes as House Minority Leader Kevin McCarthy, a California Republican, is working to shore up his relationship with the ex-President, including meeting with Trump at his Palm Beach resort, Mar-a-Lago, in January.
He threatened to use his continuing popularity among the Republican base to support any Republican candidates - the next national election is in November 2022 - who support his agenda.
"If Republican Senators are going to stay with him, they will not win again", he said. He also said McConnell "begged" for his endorsement in the senator's home state of Kentucky while running for reelection a year ago _ and suggested he'd work to defeat McConnell and his Republican allies, saying he planned to "back primary rivals who espouse Making America Great". "We want brilliant, strong, thoughtful, and compassionate leadership".
McConnell and other Republicans have declined to endorse the Biden package of stimulus measures, calling it too expensive.