In one of her last acts as U.S. Treasury Secretary, Janet Yellen said her agency will start taking “extraordinary measures,” or special accounting maneuvers intended to prevent the nation from hitting the debt ceiling,

Treasury Secretary Janet Yellen, in a letter on Friday to congressional leaders, said the Treasury would begin using extraordinary measures Jan. 21.

Secretary says Treasury will suspend investments in two government employee benefit funds through March 14, to claw back borrowing capacity under the $36.1 trillion debt ceiling