Many Americans believe a president must commit a serious illegality, ie "High Crime" to qualify for impeachment. Not true. In fact, dereliction of duty is also a qualifying reason. In fact, no greater argument exists for impeachment than utter failure to use common sense by a leader. For what could be more dangerous than an absolute inability to decide wisely? This article considers "Grave Dereliction of Duty" as a fundamental problem demanding impeachment and removal.