Drones, which once made great contributions to the US anti-terrorism war, and the anti-terrorism policy represented by Obama are now widely criticized. Not only are victims in Pakistan and Yemen condemning them, but there have also been widespread doubts in the United States in recent years, and Senator Paul's speech against drones has aroused widespread discussion and doubts in the United States. This doubt arises not only because drones have killed a large number of innocent people while fighting against terrorism, nor because drones have indirectly provided a breeding ground for terrorist organizations, but also because of the deep dissatisfaction with Obama's anti-terrorism policy in the United States.