Gen. Mark Milley, the Joint Chiefs chairman, does not believe the United States should remove Iran’s Islamic Revolutionary Guard Corps from the list of known terrorist organizations.

The chairman’s comments, which came Thursday during a hearing in front of the Senate Armed Services Committee, follow reports that the Biden administration was considering such a move because it has remained a key sticking point in the negotiations to restore the 2015 nuclear agreement, which was later abandoned by the Trump administration in 2018.