The administration has admitted publicly that drones were used to kill four U.S. citizens.
These citizens may very well be guilty of treason or plots against us. That is not the issue. The issue is no one in government is allowed to put a U.S. citizen to death without a trial, simply on the opinion of the executive branch. A citizen must be tried in a court, be able to exercise his right to a defense, and then be judged guilty by his peers before the government is allowed to put him to death.
This administration, with the approval of the President, has violated the Constitution by its actions. The minimum remedy is resignation and restitution.