This month, President Trump declared a national emergency, which will allow him to move forward with building a wall along the southern border. Other recent (and still active) declarations of national emergencies include blocking property of people threatening peace, security or the stability of Yemen, declaration of national emergency by reason of certain terrorist attacks, and proliferation of weapons of mass destruction. On this episode, we’ll discuss the precedent setting of this national emergency, in comparison to others declared by presidents over the last couple decades.