The White House sent Congress a $9.4 billion rescissions package Tuesday that would codify some spending cuts made by the Trump administration, effectively asking lawmakers to reverse spending they previously voted into law.

Bobby Kogan, senior director of federal budget policy at the Center for American Progress, a liberal think tank, said in an emailed statement that the Trump administration was already “illegally impounding additional funds,” as withholding money has “always been illegal without explicit Congressional approval.”